Topic 9 Review: Subtracting Two-Digit Numbers

What does it mean to regroup when you subtract?

• When the ones make a ten or more and you must carry the 10.
• When the top number in the ones place is less than the bottom number, and you must borrow from the 10s place.
• When you subtract to find the sum.

Find the answer. Regroup if you need to.
62 - 4 = ____

• 56
• 66
• 58
• 52

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.OA.A.1

Find the answer. Regroup if you need to.
76 - 4 = ___

• 72
• 80
• 74
• 70

Look at this problem. Do you need to regroup to find the answer?
54 - 7 = ___

• Yes
• No

Look at this problem. Do you need to regroup to find the answer?
97 - 7 = ___

• Yes 
• No

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.NBT.B.9

What does it mean to "find the difference"?

• To look at two different numbers.
• To find the sum in an addition problem.
• To find the answer in a subtraction problem.

Tags

CCSS.2.MD.B.6

CCSS.2.NBT.B.5

CCSS.2.OA.A.1

Find the answer. Regroup if you need to.
53 - 29 = ____

• 34
• 24
• 32
• 82

Find the answer. Regroup if you need to.
67 - 13 = ____

• 44
• 74
• 80
• 54

Look at this subtraction problem:  
23 - 15 = ___
Which addition sentence can help you solve the subtraction problem?

• 23 + 8 = 15
• 23 - 8 = 15
• 8 + 15 = 23

Solve.
Taylor has 12 candies. 
She buys 7 more candies.
How many candies does she have now?
Then, Taylor gives 6 candies to Aiden.
How many candies does she have left?

• First, she has 5 candies after buying more. Then she has 11 candies after she gives some to Aiden.
  5 + 6 = 11
• First, she has 19 candies after she buys some.
  Then, she has 13 candies after she gives some to Aiden.

Tags

CCSS.2.NBT.B.5

CCSS.2.OA.A.1