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Make It True
Common Core State Standards
CCSS (Two-Digit Version)
CCSS.MATH.CONTENT.K.OA.A.5
Fluently add and subtract within 5.
CCSS.MATH.CONTENT.1.NBT.C.4
Add within 100, including adding a two-digit number and a
one-digit number, and adding a two-digit number and a
multiple of 10, using concrete models or drawings and
strategies based on place value, properties of operations,
and/or the relationship between addition and subtraction;
relate the strategy to a written method and explain the
reasoning used. Understand that in adding two-digit
numbers, one adds tens and tens, ones and ones; and
sometimes it is necessary to compose a ten.
CCSS.MATH.CONTENT.1.NBT.C.5
Given a two-digit number, mentally find 10 more or 10 less
than the number, without having to count; explain the
reasoning used.
CCSS.MATH.CONTENT.1.NBT.C.6
Subtract multiples of 10 in the range 10-90 from multiples
of 10 in the range 10-90 (positive or zero differences),
using concrete models or drawings and strategies based on
place value, properties of operations, and/or the
relationship between addition and subtraction; relate the
strategy to a written method and explain the reasoning
used.
CCSS.MATH.CONTENT.1.OA.B.4
Understand subtraction as an unknown-addend problem. For example, subtract 10 - 8 by finding the number that makes 10 when added
to 8.
CCSS.MATH.CONTENT.1.OA.C.6
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making
ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the
relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier
or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
CCSS.MATH.CONTENT.1.OA.D.7
Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. For example,
which of the following equations are true and which are false? 6 = 6, 7 = 8 - 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2.
CCSS.MATH.CONTENT.1.OA.D.8
Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the
unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = _ - 3, 6 + 6 = _.
CCSS.MATH.CONTENT.2.OA.B.2
Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two one-digit
numbers.
Mathematical Practice
CCSS.MATH.PRACTICE.MP2 Reason abstractly and quantitatively.
Mathematically proficient students make sense of quantities and their relationships in problem situations. They bring two
complementary abilities to bear on problems involving quantitative relationships: the ability to decontextualize—to abstract a given
situation and represent it symbolically and manipulate the representing symbols as if they have a life of their own, without necessarily
attending to their referents—and the ability to contextualize, to pause as needed during the manipulation process in order to probe into
the referents for the symbols involved. Quantitative reasoning entails habits of creating a coherent representation of the problem at
hand; considering the units involved; attending to the meaning of quantities, not just how to compute them; and knowing and flexibly
using different properties of operations and objects.
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CCSS.MATH.CONTENT.2.NBT.B.5
Fluently add and subtract within 100 using strategies based
on place value, properties of operations, and/or the
relationship between addition and subtraction.
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Nikki Smith © 2015
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Name ________________________________
Name ________________________________
Make It True Recording Sheet
Make It True Recording Sheet
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Nikki Smith © 2015
Make It True
Directions for Home
1. Players take turns picking from pile
of face down cards
2. Pick the first card and choose
where to place it
3. Pick a second card and choose
where to place it
4. Continue picking cards until a card
can be placed to make the equation
true
5. The player who completes a true
equation first wins
6. Record the winning equation and play
Make It True
two-digit addition & subtraction
Directions for Home
1. Players take turns picking from pile
of face down cards
2. Pick cards one by one and choose
where to place them
3. Continue picking cards until a final
card can be placed to make the
equation true
4. The player who completes a true
equation first wins
5. Record the winning equation and play
again
again
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Nikki Smith © 2015