Topic 4 Pretest

Kelly has 46 beads.Her sister gives her 28 more beads.How many beads does Kelly have now?

• 18

• 64

• 22

• 74

Which are equal to 45 + 38? Choose all that apply.

• 40 + 30 + 5 + 8

• 45 + 30 + 5 + 3

• 83

• 93

• 40 + 30 + 10

Is the sum equal to 81? Choose Yes or No.

Groups:

(a) Yes

,

(b) No

• 35 + 56

• 31 + 49

• 63 + 18

• 52 + 29

Find 27 + 44. Show how you solved the problem.

Which is the sum of 57 + 15?

• 82

• 72

• 62

• 42

Which are the same amount as 13 + 8 + 7? Choose all that apply.

• 20 + 8

• 10 + 10 + 8

• 18

• 28

• 20 + 7

What is the sum of 26 + 53 + 7? Show your work.

Find the sum of 23 + 19.

Then subtract 10 from that sum.

Show and explain your work.

Part A. Find the sum. Use a strategy.

Part B. Explain how you found the sum and why your strategy works.