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Answer Key to Class:5
ENGLISH
1. (A) Correct Spelling
(B) Meanings
 very old, antique/
`
 find, look for/


horrible
excited
 to ask, to question/
 shine, glow , to shine, to glow/
,
(C) Opposites:
 tiny
 beautiful
Forms of Verbs  cut cut cut
 steal
stole stolen
2. Articles and Prepositions
The whole story revolves around a strange creature seen with a spaceship. It was an
alien that had come from Mars.
3. (A) Complete Sentences
 The players are trying hard to win the game.
 He has taken the decision.
 I will buy a present tomorrow.
(B)
 Ahmed did not score the highest marks in the exams.
 The postmen receive mails from the post offices.
 He has played the piano wonderfully well.
4.
Sentences 
amazing:

hunter:

luckily:
5. Translate into English.
 My brother takes exercise daily.
 Have they taken the meal?
 The children are not making a noise.
SCIENCE
1.
2.
Options for blanks
(i)
definite , definite
(ii)
protein
(iii)
Thick stem
(iv)
second/B ,first/A
Short Answers
(i)
(a)
Boiling/Bubbles on the surface of water
(b)
Water droplets
(ii)
Difference
OPEN CIRCUIT
(iii)
(iv)
CLOSED CIRCUIT
(a) Incomplete path of flow of current
(a) Complete path of flow of current
(b) Switch is off in open circuit
(b) Switch is on in open circuit
Uses
(a) Wedge:
(b) Magnet:
(a) More force:
(b) Reason:
It is used to cut or tear apart the things.
It is used to separate magnetic and non-magnetic materials.
Cart A
Greater force is required to move heavy load.
MATHEMATICS
1.
Options for Blanks
(i)
7 tenths /
/ 0.7
(ii)
whole/ integral and decimal/ fractional
(iii) three lac four thousand six hundred and nine. OR
three hundred four thousand, six hundred and nine
(iv)
<
2.
Solution:
2nd Method
1st Method
=5
+1
= ( + )+
=
+
=
+
=
+
=
=
=7
=6+1
+
= 7
1st Method
3.
Multiples of 30 = 30, 60, 90, 120, 150,180, 210, 240, 270, 300, …, 2040, …
Multiples of 85= 85, 170, 255, 340, 425, 510, …, 2040, …
Multiples of 40= 40, 80, 120, 160, 200, 240, 280, 320, …, 2040, …
3rd Method
L.C.M = 2040
2nd Method
5 30, 85, 40
2
6, 17, 8
3, 17, 4
= 120 × 17
= 2040
2 40
2
6
17 17
2 20
3
3
1
2 10
= Rs
.
So his daily expenditure is Rs. 113.25
Milk in a pail = 33 l
Remaining milk = 29
Milk spilt = 33 l – 29
= (32 – 29) + 1
=3+
−
−
l
l
OR
=
=
= 3+
=3
=3
=
=3
So the quantity of spilt milk is 3
–
5
5
30= 5×2×3
1
85= 5×17
40= 5 × 2 × 2 × 2
LCM = common factor × uncommon factor
= 5 × 2 × 3 × 2 × 2 × 17
= 10 × 12 × 17
= 120 × 17
= 2040
(1 week = 7 days)
Person spends in 1 week (7 days) = Rs 792.75
Person spends in 1 day
5.
5 85
1
LCM = common factor × uncommon factor
LCM = 5×2×3×17×4
4.
5 30
= Rs 113.25