Mental Math
Addition
Subtraction
Word Problems
100

15 - 8 =

7

100

18 + 5 =

23

100

57 - 7 = 

50

100

Miss Osborne gave a student 6 stickers to start his collection. He received 15 more for his birthday.

How many stickers does the student have now?

Write a number sentence and the answer.

15 + 6 = 21


200

13 - 8 =

5

200

7 + 44 = 

51

200

47 - 5 = 

42

200

Mrs. Blasucci has 50 pencils and gives away 8. How many pencils does she have now?

Write a number sentence and the answer.


50 - 8 = 42

300

9 + 7 =

16

300

46 + 30 = 

76

300

85 - 60 = 

25

300

Miss Rizzo gave a student 10 crayons to use. He received 23 more crayons later in the day.

How many crayons does the student have now?

Write a number sentence and the answer.

10 + 23 = 33


400

7 + 6 =

13

400

54 + 9 = 

63

400

80 - 8 = 

72

400

Mrs. Wine has 83 erasers and gives away 7. How many erasers does she have now?

Write a number sentence and the answer.

83 - 7 = 76

500

9 + 9 =

18

500

22 + 44 = 

66

500

70 - 6 =

64

500

Miss Osborne gave a friend 6 cookies. She received 35 more for her birthday.

How many cookies does the friend have now?

Write a number sentence and the answer.

6 + 35 = 41