Addition and Subtraction Strategy Review

75 - 24 = 

• 99
• 51
• 41
• 62

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

83 - 45 = 

• 38
• 42
• 128
• 37

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

92 - 26 =

• 63
• 64
• 65
• 66

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

20 - 9 =

• 12
• 5
• 11
• 9

Tags

CCSS.1.OA.C.6

38 - 26 =

• 22
• 12
• 64
• 52

Tags

CCSS.2.NBT.B.5

What is the best strategy for solving this problem?

• Count Back
• Count On
• Jump Strategy
• Compensation Strategy

Tags

CCSS.1.OA.C.5

CCSS.1.OA.C.6

Name the strategy used to solve:

• Count On
• Doubles +1
• Jump Strategy
• Guess

Tags

CCSS.2.OA.B.2

Name the strategy used to solve:

• Count On
• Jump Strategy
• Make a Ten
• Compensation Strategy

How would you rearrange this to find the missing number?

• 9 - 15 = ?
• ? - 9 = 15
• 15 - 9 = ?
• 9 + 15 = ?

Tags

CCSS.2.OA.A.1

What strategy is this?

• Compensation Strategy

• Open Number Line/Jump Strategy

• Count on

• Split/Branching Strategy

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.NBT.B.8

CCSS.2.NBT.B.9