Unit 4 Review

Jill has 58 stickers. Her brother gives her 27 more stickers. How many stickers does Jill have now?

• 31

• 63

• 75

• 85

Find 35 + 14 using partial sums. Which is the best estimate of the sum? *Clue- round the numbers to the nearest 10

• 30

• 40

• 50

• 60

Choose any method to solve each problem. Is the sum equal to 73? Match it to Yes or No.

• No, it doesn't equal 73

• 58 + 15 = ?

• No, it doesn't equal 73

• 40 + 30 = ?

• Yes, it equals 73

• 67 + 7 = ?

• Yes, it equals 73

• 68 + 5 = ?

Which are equal to 54 + 38? Choose all that apply.

• 50 + 30 + 4 + 8

• 80 + 12

• 82

• 92

Which is the sum of 42 + 28?

• 71

• 70

• 68

• 60

Add. Use the place-value blocks to help. Regroup if needed.

• 72

• 74

• 82

• 84

Find the sum of 43 + 9.

• 4

• 50

• 42

• 52

Which is the sum of 38 + 27?

• 53

• 55

• 65

• 63

Carlie has 14 pencils. Then she gets 8 more pencils. She has 12 friends. She gives each friend one pencil. How many pencils does she have left?

• 14

• 12

• 10

• 8

Estimate the sum of 58 + 27.

• 70

• 75

• 80

• 90