Module 14 Review Quiz

25 - ___ = 13

• 12

• 15

• 18

• 21

Answer explanation

To find the missing number, subtract 13 from 25. This gives 25 - 13 = 12. Therefore, the correct answer is 12.

30 - ___ = 17

• 14

• 13

• 16

• 15

Answer explanation

To find the missing number, subtract 17 from 30. So, 30 - 17 = 13. Therefore, the correct answer is 13.

50 - ___ = 35

• 25

• 20

• 15

• 10

Answer explanation

To find the missing number, subtract 35 from 50. 50 - 35 = 15. Therefore, the correct answer is 15.

40 - ___ = 22

• 21

• 20

• 18

• 19

Answer explanation

To find the missing number, subtract 22 from 40. This gives 40 - 22 = 18. Therefore, the correct answer is 18.

Trevor buys 3 large postcards and 7 small postcards. How many postcards does Trevor buy?

• 10

• 12

• 14

• 16

Answer explanation

Trevor buys 3 large postcards and 7 small postcards. Adding them together: 3 + 7 = 10. Therefore, the total number of postcards Trevor buys is 10.

Mrs. Bryant has 73 stickers. She gives one to each of her students. If she has 20 students, how many stickers does she have left?

• 93 stickers

• 43 stickers

• 53 stickers

• 35 stickers

Answer explanation

Mrs. Bryant starts with 73 stickers and gives away 20 to her students. To find out how many she has left, subtract 20 from 73: 73 - 20 = 53. Therefore, she has 53 stickers left.

Tags

CCSS.2.NBT.B.5

CCSS.2.OA.A.1

Some children were in Mrs. Smith’s classroom. Then 10 children left. Now there are 20 children in the room. How many children were in Mrs. Smith’s classroom to start?

• 20

• 25

• 30

• 15

Answer explanation

To find the initial number of children, add the 10 who left to the 20 remaining: 20 + 10 = 30. Therefore, there were 30 children in Mrs. Smith's classroom to start.

A librarian put 58 books on the first shelf. She puts 31 more books on the first shelf than on the second shelf. How many books does she put on the second shelf?

• 30

• 27

• 33

• 36

Answer explanation

The librarian has 58 books on the first shelf and puts 31 more than on the second shelf. Let x be the number of books on the second shelf. Then, 58 = x + 31. Solving for x gives x = 27. Thus, she puts 27 books on the second shelf.

There are 45 apples in a basket. If 15 apples are taken out, how many apples remain in the basket?

• 40

• 35

• 25

• 30

Answer explanation

There are initially 45 apples. If 15 apples are taken out, you subtract 15 from 45. 45 - 15 equals 30. Therefore, 30 apples remain in the basket.

60 - ___ = 45

• 10

• 15

• 25

• 20

Answer explanation

To find the missing number, subtract 45 from 60. This gives 60 - 45 = 15. Therefore, the correct answer is 15.