Two-step addition and subtraction problems

Question 1

Sam has 24 marbles. He gives 7 marbles to Lily and then buys 13 more marbles. How many marbles does Sam have now?

Accepted Answer

30 marbles

Answer

29 marbles

Answer

17 marbles

Answer

37 marbles

Question 2

Jamal has 84 crayons. He gives 20 crayons to his friend. Then he finds a stash of 57 crayons in his drawer. How many crayons does Jamal have now?

Accepted Answer

121

Answer

111

Answer

161

Answer

7

Question 3

Sam has 84 stickers. He gives 27 stickers to his friend. Then he receives another pack of stickers that contains 15 more than the number he gave away. How many stickers does Sam have now? Which of the following shows the correct two‑step method and the correct final answer?

Accepted Answer

First subtract 27 from 84 to get 57, then add 42 to get 99.

Answer

First add 27 to 84 to get 111, then subtract 42 to get 69.

Answer

First subtract 15 from 84 to get 69, then add 27 to get 96.

Answer

First add 15 to 84 to get 99, then subtract 27 to get 72.

Try three questions

Sam has 24 marbles. He gives 7 marbles to Lily and then buys 13 more marbles. How many marbles does Sam have now?

Jamal has 84 crayons. He gives 20 crayons to his friend. Then he finds a stash of 57 crayons in his drawer. How many crayons does Jamal have now?

Sam has 84 stickers. He gives 27 stickers to his friend. Then he receives another pack of stickers that contains 15 more than the number he gave away. How many stickers does Sam have now? Which of the following shows the correct two‑step method and the correct final answer?

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