math unit 4 mastery

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

• 31

• 63

• 75

• 85

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

• 50 + 30 + 4 + 8

• 80 + 12

• 82

• 92

Is the sum of 68 + 5 equal to 73? Choose Yes or No.

• Yes

• No

Is the sum of 40 +30 equal to 73? Choose Yes or No.

• Yes

• No

Is the sum of 67 +7 equal to 73? Choose Yes or No.

• Yes

• No

Is the sum of 58 +15 equal to 73? Choose Yes or No.

• Yes

• No

Find 35 + 14 using partial sums. Which is the best estimate of the sum?

• 30

• 40

• 50

• 60

Which equation shows using partial sums to solve 35 + 14?

• 30 + 10 + 5 + 4 = 59

• 35 + 10 + 4 = 59

• 30 + 10 + 5 + 4 = 49

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

• 72

• 74

• 82

• 84

Complete the equation to show how to find 67 + 26 using partial sums.

​ (a)   Tens + ​ (b)   Ones =​ (c)  

• 8
• 13
• 93
• 7
• 6
• 4
• 14
• 83
• 84
• 94