1. No category

Time
Date A nickel weighs about 5 grams (5 g). A liter of water weighs about 1 kilogram (1 kg). In Problems 1-7, circle a possible weight for each object.
1. A dog might weigh about
200 kg
2,000 kg
2. A can of soup might weigh about
4g
40 g
3. A newborn baby might weigh about
30 kg
300 kg
4. An adult ostrich might weigh about
1.5kg
S
15kg
5. A basketball might weigh about
60 kg
6 kg
6. The weight limit in an elevator might be about
100 kg
~oo ~
10,000 kg
7. A pencil might weigh about
45 g
450 g
8. Choose one of the problems above. Explain why you chose your answer.
Sample answer: Problem 7-1 thought a pencil would weigh
ab()ut the
286
sa~e
as a nickel so I chose 4.5 grams.
Time
Date
.(M~tric and Customary Weight···
__ ,_'" '"' '"",,' v,,- -, __'
...
J
-J" ~~,.....-::c.~-~~--,
_ , -,_,-:"",-r-~~"""""-77":-"-'~I"7-"""--7-:'-""-~~~-::'-':--"_,,",-~~-~- ____ ~--'~ ____ ~_.-'O--~~---~--'-'''7--.- ._-:.,..':""'"'";_....,.."..---~""~""-~~~~.,..~,~--~-:"'_-,.-,...'-...~
~
The number line below has ounces on the top and grams on the bottom. It shows, for example, that 7 ounces are about equal to 200 grams.
ounces
0
2
I
I
I
i
I
I
i
I
0
grams
4
I
I
i
6
II
8
I
I
I
200
100
i
I
10
I
I
12
I I
I
I
I
300
14
I
16
I
i
I
400
20
I
18
I
I
­
I
I
500
Use the number line to give the approximate weight of each object.
Sample answers:
0
1.
2.
PRETZELS
.
~
.
.
.
About
.' '. 15 ounces
425
16 ounces
grams
About
3.
455
grams
4.
100 grams
3
About _ _
500 grams
_
1
-=-_
2
ounces
About
17~
ounces
Use the number line to help you determine which object weighs more. Circle the heavier object.
s.
2.3 ounces
6.
5 ounces
454 grams
287
Date Time
.1
Boxes~_
Math
Explain how you know that the pattern
below is an example of a translation.
b. Draw the 'figure after it is translated
to the right.
I
I
i
Sample answer: The figure is slid to the right. It was not turned or flipped. The size and shape are the ~ame. 2. Find the solution of each open sentence.
2
Y=
a. 6
7
b. 4
Y=
7
3
9
a
TO + a = TO
r= J....
10
3
c. 5
r=
5
10,
1
or "2
1
m
V
I
!
I
VI
I
3. Circle the numbers that are multiples of 6.
8
38
®
®
@
®
0
3~0
4. Insert parentheses to make each number
sentence true.
a. 14
*~8 -
G3 - 6)* 5 =
c. 48 /
d. 150
5. If you use an average of 7 sheets of paper
per day, about how many sheets would
you use in
15)= 42
b. ~ + 2)=
b. 4 weeks?
49
196
c. 52 weeks?
2~548
sheets
5~O96~
sheets
a. 1 week?
56 - 21
10 - 4
/~o + 5)<
4
*4
d. 2 years?
or 5,110
288
/
Put an X through the numbers' that are
multiples of 5.
----'~'---
10
= ,~--'--=-_
/
sheets
sheets
0
Date
Time
Geometric shapes like these 3-dimensional ones are also called geometric solids.
~
Rectangular
Prism
IJ
Cylinder
m fj
Triangular
Prism
Cone
~
,.,.,"
Sphere
&
Square
Pyramid
Look around the classroom. Try to find examples of the geometric solids Rictured above. Draw a picture of each. Then write its name (for example: book).
Answers vary. Example of rectangular prism:
Example of cylinder:
Example of triangular prism:
Name of object:
Name of object:
Name of object:
Example of cone:
Example of sphere:
Example of square pyramid:
Name of object:
Name of object:
Name of object:
289
Date at
Time
Modeling a
R~ctangular _Prism.
After you construct a rectangular prism
with straws and twist-ties, answer
the questions below.
vertices
edges
faces
6_ _ face(s)
1. How many faces does your rectangular prism have? __
6_ _ face(s)
How many of these faces are formed by squares? 0, or 2 face(s)
2. How many of these faces are formed by rectangles? _.. __
3.
1__ face(s)
4. Pick one of the faces. How many other faces are parallel to it? _ _
5. How many edges does your rectangular prism have?
_1_2__
edge(s)
3__ edge(s)
6. Pick an edge. How many other edges are parallel to it? _ _
8_ _ vertices
7. How many vertices does your rectangular prism have? __
8. Write T (true) or F (false) for each of the following statements about the rectangular
you made. Then write one true statement and one false statement of your own.
a.
~ __T__ It has no curved surfaces.
b.
__F
_ _ All of the edges are parallel.
c.
__T__ All of the faces are polygons.
d.
__F__ All of the faces are congruent.
Answers vary.
False Answers vary.
e. True
f.
290
Date
Time
1. Estimate how many of each coin you think it will take to make a 1-ounce weight. Then use a
balance or scale to determine exactly how many of each coin are needed.
Estimated Number
Actual Number
of (oins
of (oins
Answers vary.
11 or 12
5 or 6
12 or 13
(oin
. penny
nickel
dime
· quarter
2. Describe how you estimated how many of each coin it might take to make a 1-ounce weight.
Sample answer: I know there are about 28 g in 1 ounce, and
a nickel weighs 5 g. Therefore, 6 nickels should weigh 30 9
(5 * 6 = 30), so 6 nickels equal about 1 ounce. I estimate that
pennies weigh 1 as much as nickels, so it should take twice as
many pennies, which is 12. Dimes are smaller than pennies,
so I guessed 15 dimes. Quarters are heavier than nickels,
so I guessed 4. .
Try This
;
I
""''''''''''''''''''F'~~='''''/
3. Aboutwhat fraction of an ounce does each coin weigh?
1
1 penny = 12
oz
1 nickel
=
1
6
oz
1 dime
Sample answers:
=
1
13
oz
1 quarter
=
1
oz
Explain how you found your answers.
Sample answer: I used the number of coins that equal 1 oz
as the denominator. For example, because 12 pennies equal
1
1 OZ, 1 penny equals 12 oz.
291
Date Time
1. The object below has the shape of a
geometric solid. What is the name of the
solid? Circle the best answer.
2. Draw the figure after it is rotated
clockwise
*~turn.
@ rectangular prism
B. cone
c.
cylinder
D. square pyramid
3. Write a number model to estimate the
answer. Then correctly place the
decimal point.
a. 0.97
*4 =
4. Insert <, >, or = to make a true number
sentence.
a. -12
3.88
1_*_4_ _4_ _
b. -44
Number model: __
c. -64
b.
-19
26
-0.43 1 8.7= 74.8 -:- 4
Number model:
80 -;- 4
= 20
d.
5. Round each number to the nearest tenth.
a. 2.34
b. 0.68
c. 14.35
d. 1.62
e. 5.99
2.3
0.7
14.4
1.6
6.0
>
0
-0.37
6. A cinnamon raisin bagel has about
230 calories. How many calories are
in one dozen bagels?
About a
4
1
2
e. -0.28
292
>
<
<
2,760
calories
Date Time
Polyhedrons are geometric solids with flat surfaces formed by polygons.
For each problem below­
• Decide what the polyhedron should look like.
• Use straws and twist-ties to model the polyhedron.
• Answer the questions about the polyhedron.
Look at page 102 of the Student Reference Book
if you need help with the name.
1. I am a polyhedron.
I have 5 faces.
Four of my faces are formed by triangles.
One of my faces is a square.
a. After you make me, draw a picture of me in the space to the right. Square pyramid
b. What am I?
c. How many corners (vertices) do I have?
5
Square
d. What shape is my base?
2. I am a polyhedron.
I have 4 faces.
All of my faces are formed by equilateral triangles.
All of my faces are the same size.
a. After you make me, draw a picture of me in the space to the right. b. What am I?
Triangular pyramid, or regular tetrahedron
c. How many corners (vertices) do I have?
d. What shape is my base?
4
Triangle
293
Date
Time
Knowing how to draw is a useful skill in mathematics. Here are a few ways to draw
a cube. Try each way. Tape your best work at the bottom of page 295.
A Basic Cube
Draw a square.
Draw another square that overlaps your first square.
The second square should be the same size as the Hrst.
D
@
Connect the corners of your 2 squares as shown.
This picture does not look much like a real cube. One problem
is that the picture shows all 12 edges, even though not all the
edges of a real cube can be seen at one time. Another problem is
that it is hard to tell which face of the cube is in front.
A Better Cube
Begin with a square.
Next, draw 3 parallel line segments going right and up from
3 corners of your square. The segments should all be the
same length.
Finally, connect the ends of the 3 line segments.
This cube is better than before, but it shows only the edges
and corners, not the faces. If you want, try shading your cube
to make it look more realistic.
294
D
Date
•
Time
Drawing a Cube
continued
A Cube with Hidden Edges
Sometimes people draw cubes and other shapes with dashed line segments.
The dashed line segments show edges that are hidden. Here is one way to draw
a cube with hidden edges. Use a pencil.
Draw a square.
D
Draw a faint square that overlaps your first square. The second square should be the same size as the first. Connect the corners of your 2 squares with faint line segments.
Trace over 5 of your faint line segments with solid lines
and 3 with dashed lines. The dashed line segments show the
3 edges that are hidden.
Tape your best work here.
See students' work.
295
Date
Time
Stephen wants to build a bookcase for his books. To help him design the bookcase,
he measured the height of each of his books. He rounded each measurement to the
nearest of an inch. His measurements are given below.
i
Book Heights (to the nearest ~ inch)
1111
7111111
13
62,94,78,72,8,68,94,94,9t,94,94,84,8,84,88'
11
7371
1177111
62,78,9,68,98,68,72,8,84,94,68,68,84,84,84
Plot the data set on the line plot below.
Book Heights
en
.::£ 0
0
ro
.....
0
....
Q)
..c
E
:::::J
Z
...
X
X
X
X
X
X X
X X
X
X
X
X
X
X
I
8 12
I
6 12
7 12
7
8
9
Height (inches)
Sample number models are given.
Use the completed plot to answer the questions below and on journal page 2958.
Write a number model to show how you solved each problem.
1. a. What is the maximum book height?
983
inches
61
b. What is the minimum book height? _--=2_ inches
2Z c. What is the range of the data set? _--=8_ inches
3
1
7
8Number model:
28 9
295A
6'2 . . .
I ..
9 12
Time
Date 82­
2. a. What is the median of the data set? _-----'-4_ inches
b. How much longer is the maximum height than the median height? 1
1s
3
inches
Number model:
1
1
= 1s
9s - 84"
3. Suppose that Stephen wants to make the space between the shelves on his bookcase
i of an inch taller than his tallest book.
a. How far apart should he make the shelves?
1a.?8' 0 r 102-
4 inches apart
Number model:
9~8
+ 78 = 10S2
b. If the thickness of the wood he uses for the shelves is
i inch, what will be the
total height of each shelf? (Hint: The totall1eight is the thickness of the wood
plus the distance between shelves.)
7
2
5
7
1as inches Number model: 1as s 1as + =
4. Stephen decides to make the bookshelf two shelves high. He will put all the books
that are 8 inches tall or shorter on the top shelf and all the books that are more
than 8 inches tall on the bottom shelf.
a. What will be tile difference in height between the tallest books on the top shelf
and the shortest books on the top shelf?
1
1-
2
_----'=''--
inches
1
1
8
6=
1­
2
2
Number model: _ _ _--=_ _-=-_
b. What will be the difference in height between the tallest book on the bottom
shelf and the shortest books on the bottom shelf?
11 _--=:!_
inches 1
1
9~8
- 84 = 1­
8
Number model: _~_ _-'--_-=_
5. Make up and solve your own problem about the book height data.
Answers vary.
Number model: _ _ _ _ _ _ __
2958
Date
Time
.-'.'-~'-".'.-'
.. -~~ .......•.
..• _
'
, .", ___"-~l
,~" ___ ,
2. Find the solution of each open sentence.
1. Draw the figure after it is translated
to the right.
a. -7
8
b.
t + ­ 14 = -12
c. -3
10
d.
6
s = -----=18==-­
1
S = 8
t=
m= 1
5
2
"8 + X
3
4
_ _4.:..,--_
1
10
m=
4
1
54
60
x=8.t Or 2"
Name the first ten multiples of each number.
&
6
12
b.
86
172 , 258 , 344 , 430 , 516 , 602 , 688 , 774 , 860
l
18
24
30
+ 1.7)*
2.5
+ ~=
a. 4 packs of gum?
250
10 packs of gum?
3 > 5 * 30
c.
16 packs of gum?
8.3 =(26.15 - 23.4)* 2
. d.
33 packs of gum?
+ 3.7)*
13.8 ­
3.1
~
296 5. Gum costs $0.80 per pack. What is the
b.
b. 21.7 / (3
d.
48
cost of
sentence true.
c. (56.3
42
-------­
4. Insert parentheses to make each number
a. (98.3
36
$3.20
$8.00
$12.80
$26.40
Date Time
1. The object below has the shape of a
geometric solid. Name the solid.
2. Draw the figure after it is rotated
counterclockwise
~-turn.
cylinder
3. Write a number model to estimate
4. Insert
the answer. Then correctly place the
decimal point.
<
b. -123 >
c. -8.9 <
d.
>
a.
a. 7.56
* 4 = 3 0.2 4
8*4
Number model:
b. 563.2 -;- 4
32
= 1 4 0.8
Number model:
600
-••
4 = 150
<, >, or = to make a true number
sentence.
e.
-14
-6
-241
-5.7 1
2
5
3
9
1
0
-'
5. Round each number to the nearest tenth.
a. 3.46
b. 0.71
c. 4.35
d. 9.60
e. 22.89
3.5
0.7
4.4
9.6
22.9
6. Jake can ride his bike
5 miles in
40 minutes. At this rate, how long
does it take him to ride 1 mile? Circle
the best answer.
A. 200 minutes
B. 40 minutes
C. 20 minutes @
8 minutes 297
Date Time
1. Write a formula for the area of a rectangle. In your formula, use A for area. Use I and
w for length and width, or band h for base and height.
A == I * w, or A == b * h
2. Draw a rectangle with sides measuring 3 centimeters and 9 centimeters. Find the area.
9
Number model:
* 3 ==
27 3. Find the height of the rectangle. Area
27
square centimeters
4. Find the length of the base of the rectangle.
Area = 56 m2
Area
= 84 in2
7 meters
56 : 7 8 Number model:
8_ __ m height = _ _
84 - 12 == 7
7 _ _ in.
length of base = _ _ _
Number model: _ _ _
- _ _ _ __
6. Find the height of the rectangle.
5. Find the area of the rectangle.
D}?
11.3 em
26 em
11 ·3 * 5
56.5 cm
Number model:
Area =
298
Area=403cm2
2
56.5
Number model:
height =
403 -;- 26 == 15.~
15.5
cm
Time
1. What is the total number of cubes needed
2. Calculate the volume.
to completely fill the box? 125
35 in
cubes
25 in.
Number model:
30,625
Volume =
3. When you roll a 6-sided die, about what
(25 * 35) * 35
== 30,625
in 3
~
4. Complete.
fraction of the time would you expect
4
1
a. 13 ft = _ _ _ yd _ _ _ ft
a. a multiple of 2
to come up?
3
6'
or ~
b. a factor of 20
4
or ~
to come up?
6'
b. 18
ft 6 in. =
c. 972 in.
=
d. 15,840
ft =
e. 24,640 yd =
~
5. Add.
d.
e.
$71.08
b.
c.
-54
14
mi
PJli\
~
----------------------------~
6. If 4 shirts cost $76, what is the cost of
-26
-62 + (-15) =
-77
-88 = 51 + (-139)
$63.89 = -$23.56 + $87.45
a.
6 _ in.
6 yd _ _
27 yd
3 _ mi
__
+ 28 =
+ (-$85.79)
a. 2 shirts?
$38
$114
1 dozen shirts? $228
75 shirts? $1 ,425
b. 6 shirts?
c.
d.
-$14.71
299
Time
Date
~
:
138
,'H . . " "
Each picture at the bottom of this page and on the next page shows a box that is partially
filled with cubes. The cubes in each box are the same size. Each box has at least one
stack of cubes that goes to the top.
Your task is to find the total number of cubes needed to completely fill each box.
Record your answers in the table below.
(
i
Table of Volumes
Placement of Cubes
Box 1
Box 2
Box 3
Box 4
Box 5
Box 6
Number of cubes
needed to cover
the bottom
32
40
24
16
35
25
Number of cubes
in the tallest stack
(Be sure to count
the bottom cube.)
5
7
4
5
6
5
Total number of
cubes needed to
fill the box
l
160 280 96
'""
Box 1
300
i
80 210 125
""~~~'"
,,'
Box 2
Time
Date
-.-..--- ........... ~-~.....'
~
""",',"
Box 3
Box 5
","',.,_h,-_,,_>, , '
Box 4
Box 6
Formula for the volume of a rectangular prism:
V= B* h
B is the area of a base.
h is the height from that base.
,
)
Volume units are cubic units.
.. _--­
base
301
Time
Date 1~II~e~~~&tcking Problems continued •
.:
.. ~
....
138
~~_~, ••• ,,"_
.
·_v______ • __ , __ ,~~ ',_:,/
Find the volume of each stack of centimeter cubes.
2. 1. Volume =
Volume
/
/
3. /
/
4.
/
/1
II
II
II
Volume
/
/
~/
L­
I
Volume =
/
lI/
=
Choose one of the problems from above. Describe the strategy that you used the volume of the stack of centimeter cubes. am Ie answer: For Problem 4 I found the volume of the
tall part, which is 4 cm 2 * 6 em == 24 cm~, and then added
the volume of the two extra squares to get 26 CI'Tl_3_.___
Try This
7.
6.
8cm
2cm
Number model:
Volume =
302
(2
18
* 3) * 3 ==
cm 3 18
Number model:
Volume =
(8
160
* 10) * 2 ==
cm 3
160
Time
Date
1. a. What was the heaviest item in the class Gram and Ounce Museum? _ _ _ _ _ __
b. How much did it weigh?
grams
ounces
Answers vary.
2. a. What was the lightest item in the class Gram and Ounce Museum? _ _ _ _ _ __
b. How much did it weigh?
grams
ounces
Answers vary.
Complete.
3.6 g
= 6~000
mg
4.
3,000 g
7. 2.9 g = 2,900 mg
96 oz
9. 6 Ib =
56 oz
11. 3.5 Ib =
5. 3 kg
=
6.
8.
10.
12.
7 g = 7,000 mg
8 kg = 8,000 g
4.5 kg = 4,500 g
9 Ib = 144 oz
8 T = 16,000 Ib
Use the Rules of Thumb below to solve Problems 13-15. Write number models to show
how you estimated.
Rules of Thumb
1 kilogram equals about 2.2 pounds
1 ounce equals about 30 grams
Sample answers:
13. A video camera weighs about
120 grams. About how many ounces is that?
1_2_0__:_3_0__4_ _
I\lumber model: _ _
4
_ _ _ _ oz
14. A baby weighs about 3.5 kilograms at birth. About how many pounds is that?
3_.5_*_2_._2__7_._7_ _
Number model: _ _
_ 7_.7_ lb
15. An African elephant weighs 11,023 pounds. About how many kilograms is that?
Number model:
11 000 -;- 2.2 == 5 000
5,000
kg
303
Time
Date 1. The object below has the shape of a
geometric solid. Name the solid.
ch 'figure below shows the original
figure rotated clockwise ~-turn?
A
A
Original
c
8
cone
~
3. Write a number model to estimate the
answer. Then correctly place the
decimal point.
4. Insert
* 32.9 = 1 9 7.4
Number model:
6
* 30 =180
b.
c.
b.
3 2.9
98.7 -;- 3
Number model:
99 -;- 3 . 33
d.
e.
5. Round
8.99 to the nearest tenth. Circle the
to make a true number
sentence.
a.
a. 6
<, >, or
< -9
-89 > -99
-2.99 < -2.9
-4" > -3
-9 > -2*
-34
1
1
6. It takes
2 cups of 'flour to make about
best answer.
20 medium-size peanut butter cookies.
A. 8.0 How many cups of flour will you need
to make about
@9.0 4
cups
6
cups
_L
cups
a. 40 cookies?
C. 9.1
b.
D. 8.09
c. 50 cookies?
60 cookies?
d. 740 cookies?
304
0
18
74
cups
~
Date Time
Math Message
=
1 quart =
1 pint
1 half-gallon
1 gallon
=
=
2
2
2
4
cups
pints
quarts
quarts
Think: How can the picture above help you remember how many cups are in a pint,
how many pints are in a quart, and how many quarts are in a gal/on?
Units of Capacity
1. Circle the unit you would use to measure each amount.
A large jug of milk
milliliters orC@~
Water in a thimble
A glass of juice
Water in a water cooler
milliliters
or@~rv Water in a fish tank
milliliters
or<@~V milliliters
orC@~v
milliliters
or@~v
Liquid in a paper cup
A tank of gas A spoonful of oil
A large bottle of water
A can of soup
2. Explain how you decided which unit to use for a can of soup.
Sample answer: I chose milliliters because
most cans hold less than a liter.
305
Time
Date
Comparing Capacities 1. Shade in the appropriate amount to show the capacity of each of your containers.
Answers vary.
~
&
~
1---2 L
·-2L
1---2 L
1---1 L
1---1 L
1---1 L
Container _ _
Container _ _
Container _ _
e.
d.
f.
l---2L
1---2L
\---1 L
1---1 L
Container _ _
Circle the container
with the largest
capacity. Was your
prediction accurate?
Container _ _
Units of Capacity
u.s. Customary
Metric
1 gallon (gal) = 4 quarts (qt)
1,000 milliliter (mL) = 1 liter (L)
1 quart (qt) = 2 pints (pt)
1 pint (pt)
1 milliliter (mL)
=
liter (L)
= 16 fluid ounces (fl
2. Use the conversion table above to solve the problems.
a. 6 qt
c.
=
3
12
pt
pt
= 48 noz
b.
8,000
d. 6,450 mL
e. 10 qt
=
212
gal
f.
g. 4 gal
=
64
c
h. 32 mL
305A
500
=
mL = 8 L
= 6.450
mL
L
= 0.500 L
0.032
L
Date Time
Solve. You may draw pictures to help you.
1. Adaline filled her watering can with 1,250 mL of water.
After watering her plants she had 485 mL left.
How much water did she use?
765
mL
2. Betty and Don spent the morning squeezing oranges
for juice. Betty squeezed 1 ~ L and Don squeezed 1t L.
What is the total amount of juice?
3. There are 450 mL of syrup in 1 can. What is the
total amount of syrup in 6 cans?
4. Dimitra poured
3~ or 3.250
L
2,700
mL
i
liter of water into a fish tank. William
poured ~ liter of water into the 'fish tank. a. How much more water did William pour?
b. How many milliliters is that?
2
5
L
400
mL
300
mL
1,800
mL
5. Raina brought a 1,500 mL jug of water to the school
picnic. Her water jug has enough water to fill 5 glasses.
How much does each glass hold?
6. The teacher set out 24 bowls of glue for the students
to use for an art project. Each bowl holds 75 mL of glue.
How much glue did the teacher need to fill all the bowls?
3058
Date Time
1. Use the data in the Largest Cities by Population table at the top of Student Reference Book,
page 302 to complete the bar graph. Round each figure to the nearest million.
Largest Cities by Population
(/)
c:::
a
E
<D 0.. a
<D
c..
a
l0­
is
E
::J
Z
12
Tokyo
Mexico
City
New York
City
Sao
Paulo
Mumbai
(Bombay)
Calcutta
Shanghai
Cities
2. Make three statements comparing the cities in the bar graph.
Example:
Abou.t 2/ million more people live in Toky.o than in Shanghai.
Sample answers: About the same numbe_r_o_f__
people live in Mexico . City and New York City;
about 1 million more people live in Sao Paulo ._
than Mumbai; about twice as many people live in
Tokyo as SaC? Paulo.
306
Time
Date 1. What is the total number of cubes needed
2. Calculate the volume.
to completely fill the box?
(2n-------n~::m
96 cubes
gem
Number model: (9
* 5) * 2
Volume =
cm 3
90
=
90
3. When you roll a 10-sided die, about what
fraction of the time would you expect a
multiple of 3 to come up?
3
10
Use a probability term to describe the
likelihood of this event.
unlikely
3.21 m
560 mm
b. 56cm =
172 in.
c. 14ft4in.=
10,560 ft
d. 2mi
321 cm =
e. 5.3 km
f.
S. Add.
m
mi = 7,040 yd
~
6. If you travel at an average speed
-26
a. -46 + 20 =
-41
b. -23 + (-18) =
c.
16 = 33 + (-17)
d. -$21.27 = $36.54
e. -$131.09
4
5~300
+ (-$76.98)
+ (-$57.81)
=-$208.07
of 50 miles per hour, how far will
you travel in
150 miles
25 miles
b. 21 hour.?
c. 2~ hours? 125 miles
d. 5~ hours? 280 miles
a. 3 hours?
~
47
307
Date Time
Math Boxes
1. If you use the telephone an average of
4 times per day, about how many times
would you use it in
b. 4 weeks?
28
112
c. 52 weeks?
1 ,456
a. 1 week?
2. A cup of orange juice has about
110 calories. About how many calories
are in a quart of orange juice?
440
times
calories
times
times
0
3. Pears cost $0.55 each. What is the cost of
a. 4 pears?
b. 10 pears?
c. 18 pears?
$2.20
$5.50
$9.90
0
4. If you walk at an average speed
of 3.5 miles per hour, how far will
you travel in
a. 2 hours?
b. 6 hours?
c. 21" hour.?
7
21
1.75
~
5. Miche"e can run 5 miles in 35 minutes.
At this rate, how long does it take her
to run 1 mile?
7
a. 5.87
d. 3.40
e. 93.29
308
miles
6. Round each number to the nearest tenth.
c. 9.65
~
miles
~
b. 0.32
minutes
miles
5.9
0.3
9.7
3.4
93.3
~