 ## Common Core State Standards (CCSS) Correlations ## N/A

### Domain - Operations and Algebraic Thinking, Grade 2

Represent and solve problems involving addition and subtraction.

Math.2.OA.A.1: Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

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Problem 2 9
Problem 1 9
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Problem 3 10
Problem 5 11
Problem 6 11
Problem 8 12
Problem 7 12
Problem 9 13
Problem 10 13
Problem 12 14
Problem 11 14
Problem 14 15
Problem 13 15
Problem 16 16
Problem 15 16
Problem 18 17
Problem 17 17
Problem 20 18
Problem 19 18
Problem 21 19
Problem 22 19
Problem 24 20
Problem 23 20
Problem 25 21
Problem 26 21
Problem 27 22
Problem 28 22
Problem 29 23
Problem 30 23
Problem 32 24
Problem 31 24
Problem 33 25
Problem 34 25
Problem 35 26
Problem 36 26
Problem 37 27
Problem 38 27
Problem 39 28
Problem 40 28
Problem 42 29
Problem 41 29
Problem 44 30
Problem 43 30
Problem 46 31
Problem 45 31
Problem 47 32
Problem 48 32

Math.2.OA.B.2: Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

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Problem 1 9
Problem 2 9
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Problem 6 11
Problem 8 12
Problem 13 15
Problem 18 17
Problem 24 20
Problem 26 21
Problem 25 21
Problem 27 22
Problem 35 26
Problem 42 29
Problem 43 30
Problem 44 30

Work with equal groups of objects to gain foundations for multiplication.

Math.2.OA.C.4: Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.

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Problem 68 42
Problem 67 42
Problem 69 43
Problem 70 43
Problem 72 44
Problem 71 44
Problem 74 45
Problem 73 45
Problem 76 46
Problem 75 46
Problem 77 47

Work with equal groups of objects to gain foundations for multiplication.

Math.2.OA.C.3: Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.

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Problem 58 37
Problem 60 38
Problem 66 41
Problem 78 47
Problem 77 47
Problem 101 59

### Domain - Number and Operations in Base Ten, Grade 2

Understand place value.

Math.2.NBT.A.1: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:

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Problem 15 16
Problem 22 19
Problem 23 20
Problem 38 27
Problem 40 28
Problem 47 32
Problem 64 40

Understand place value.

Math.2.NBT.A.2: Count within 1000; skip-count by 5s, 10s, and 100s.

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Problem 54 35
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Problem 59 38
Problem 64 40
Problem 68 42
Problem 69 43
Problem 71 44
Problem 82 49
Problem 84 50
Problem 83 50
Problem 85 51
Problem 89 53
Problem 96 56
Problem 99 58
Problem 107 62

Use place value understanding and properties of operations to add and subtract.

Math.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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Problem 3 10
Problem 7 12
Problem 9 13
Problem 12 14
Problem 14 15
Problem 16 16
Problem 15 16
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Problem 20 18
Problem 22 19
Problem 21 19
Problem 23 20
Problem 27 22
Problem 30 23
Problem 32 24
Problem 31 24
Problem 34 25
Problem 33 25
Problem 38 27
Problem 37 27
Problem 40 28
Problem 39 28
Problem 41 29
Problem 45 31
Problem 46 31
Problem 47 32

Use place value understanding and properties of operations to add and subtract.

Math.2.NBT.B.9: Explain why addition and subtraction strategies work, using place value and the properties of operations.

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Problem 5 11
Problem 7 12
Problem 9 13
Problem 12 14
Problem 14 15
Problem 15 16
Problem 16 16
Problem 20 18
Problem 22 19
Problem 21 19
Problem 23 20
Problem 25 21
Problem 26 21
Problem 27 22
Problem 30 23
Problem 32 24
Problem 34 25
Problem 35 26
Problem 37 27
Problem 38 27
Problem 40 28
Problem 42 29
Problem 45 31
Problem 46 31
Problem 47 32

Use place value understanding and properties of operations to add and subtract.

Math.2.NBT.B.7: Add and subtract within 1000, 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. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.

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Problem 15 16
Problem 22 19
Problem 23 20
Problem 38 27
Problem 40 28
Problem 47 32
Problem 64 40

Use place value understanding and properties of operations to add and subtract.

Math.2.NBT.B.8: Mentally add 10 or 100 to a given number 100–900, and mentally subtract 10 or 100 from a given number 100–900.

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Problem 18 17
Problem 64 40
Problem 69 43

Use place value understanding and properties of operations to add and subtract.

Math.2.NBT.B.6: Add up to four two-digit numbers using strategies based on place value and properties of operations.

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Problem 55 36
Problem 64 40
Problem 69 43

### Domain - Measurement and Data, Grade 2

Work with time and money.

Math.2.MD.C.7: Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.

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Problem 4 10
Problem 10 13
Problem 28 22
Problem 36 26
Problem 48 32

Work with time and money.

Math.2.MD.C.8: Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using \$ and ¢ symbols appropriately. Example: If you have 2 dimes and 3 pennies, how many cents do you have?

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Problem 3 10
Problem 29 23
Problem 57 37
Problem 64 40
Problem 65 41
Problem 71 44
Problem 75 46
Problem 84 50
Problem 85 51
Problem 87 52
Problem 99 58
Problem 110 63

### Domain - Geometry, Grade 2

Reason with shapes and their attributes.

Math.2.G.A.1: Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces.(Sizes are compared directly or visually, not compared by measuring). Identify triangles, quadrilaterals, pentagons, hexagons, and cubes.

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Problem 109 63