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.
Problem | Page |
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Problem 1 | 9 |
Problem 2 | 9 |
Problem 4 | 10 |
Problem 3 | 10 |
Problem 5 | 11 |
Problem 6 | 11 |
Problem 8 | 12 |
Problem 7 | 12 |
Problem 9 | 13 |
Problem 10 | 13 |
Problem 11 | 14 |
Problem 12 | 14 |
Problem 14 | 15 |
Problem 13 | 15 |
Problem 16 | 16 |
Problem 15 | 16 |
Problem 17 | 17 |
Problem 18 | 17 |
Problem 19 | 18 |
Problem 20 | 18 |
Problem 21 | 19 |
Problem 22 | 19 |
Problem 24 | 20 |
Problem 23 | 20 |
Problem 25 | 21 |
Problem 26 | 21 |
Problem 28 | 22 |
Problem 27 | 22 |
Problem 29 | 23 |
Problem 30 | 23 |
Problem 31 | 24 |
Problem 32 | 24 |
Problem 33 | 25 |
Problem 34 | 25 |
Problem 35 | 26 |
Problem 36 | 26 |
Problem 38 | 27 |
Problem 37 | 27 |
Problem 40 | 28 |
Problem 39 | 28 |
Problem 41 | 29 |
Problem 42 | 29 |
Problem 43 | 30 |
Problem 44 | 30 |
Problem 45 | 31 |
Problem 46 | 31 |
Problem 47 | 32 |
Problem 48 | 32 |
Add and subtract within 20.
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.
Problem | Page |
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Problem 2 | 9 |
Problem 1 | 9 |
Problem 6 | 11 |
Problem 5 | 11 |
Problem 8 | 12 |
Problem 13 | 15 |
Problem 18 | 17 |
Problem 24 | 20 |
Problem 25 | 21 |
Problem 26 | 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.
Problem | Page |
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Problem 49 | 33 |
Problem 50 | 33 |
Problem 52 | 34 |
Problem 51 | 34 |
Problem 54 | 35 |
Problem 53 | 35 |
Problem 56 | 36 |
Problem 55 | 36 |
Problem 58 | 37 |
Problem 57 | 37 |
Problem 60 | 38 |
Problem 59 | 38 |
Problem 61 | 39 |
Problem 62 | 39 |
Problem 64 | 40 |
Problem 63 | 40 |
Problem 66 | 41 |
Problem 65 | 41 |
Problem 68 | 42 |
Problem 67 | 42 |
Problem 70 | 43 |
Problem 69 | 43 |
Problem 72 | 44 |
Problem 71 | 44 |
Problem 74 | 45 |
Problem 73 | 45 |
Problem 75 | 46 |
Problem 76 | 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.
Problem | Page |
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Problem 58 | 37 |
Problem 60 | 38 |
Problem 66 | 41 |
Problem 78 | 47 |
Problem 77 | 47 |
Problem 101 | 59 |
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:
Problem | Page |
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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.
Problem | Page |
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Problem 54 | 35 |
Problem 55 | 36 |
Problem 57 | 37 |
Problem 59 | 38 |
Problem 64 | 40 |
Problem 68 | 42 |
Problem 69 | 43 |
Problem 71 | 44 |
Problem 82 | 49 |
Problem 83 | 50 |
Problem 84 | 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.
Problem | Page |
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Problem 3 | 10 |
Problem 7 | 12 |
Problem 9 | 13 |
Problem 12 | 14 |
Problem 14 | 15 |
Problem 15 | 16 |
Problem 16 | 16 |
Problem 17 | 17 |
Problem 20 | 18 |
Problem 21 | 19 |
Problem 22 | 19 |
Problem 23 | 20 |
Problem 27 | 22 |
Problem 30 | 23 |
Problem 31 | 24 |
Problem 32 | 24 |
Problem 33 | 25 |
Problem 34 | 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.
Problem | Page |
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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 38 | 27 |
Problem 37 | 27 |
Problem 40 | 28 |
Problem 42 | 29 |
Problem 46 | 31 |
Problem 45 | 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.
Problem | Page |
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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.
Problem | Page |
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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.
Problem | Page |
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Problem 55 | 36 |
Problem 64 | 40 |
Problem 69 | 43 |
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?
Problem | Page |
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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 |
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.
Problem | Page |
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Problem 4 | 10 |
Problem 10 | 13 |
Problem 28 | 22 |
Problem 36 | 26 |
Problem 48 | 32 |
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.
Problem | Page |
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Problem 109 | 63 |
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