Review Unit 3

72 + 27

• 89

• 99

• 79

28 + 16

• 44

• 34

• 54

52 - 11

• 42

• 51

• 41

83 - 39

• 44

• 74

• 70

Which of the following strategies could we use to solve the number sentence below?

6 - 3= ___________________

• Count up from 6 to find the answer of 9

• Count up from 3 to find the answer of 4

• Count Backward from 6 to find the answer of 3

There are 33 buttons in the basket and 47 snaps. How many total buttons and snaps were there in the basket?

• 70

• 90

• 80

• 710

At the park there were 29 children singing. Some more came to sing, too. There are 68 children there total. How many came to join the first group?

• 40

• 39

• 95

Sandy paid $51 for a new doll house and $ 18 on a new doll. How much did she spend total

• $45

• $35

• $69

Mrs. Jones has 39 green rocks and 28 blue rocks in her garden. How many more green rocks does she have than blue rocks?

• 9 rocks

• 11 rocks

• 67 rocks