Math Review

Addition

100

75 + 16

91

200

29 + 13

42

300

38 + 18

56

400

59 + 24

83

500

16 + 87

103

Subtraction

100

59 - 24

35

200

98  - 44

54

300

76 - 29

47

400

42 - 16

26

500

57 - 39

18

Count by...

100

Start at 105, count by 10's

115, 125, 135, 145, 155

200

Start at 88, count by 100's 

188, 288, 388, 488, 588

300

Start at 77, count by 10's

87, 97, 107, 117, 127

400

Start at 230, count by 5's

235, 240, 245, 250, 255

500

Start at 139, count by 10's 

149, 159, 169, 179, 189

Word Problems

100

Ali has 75cents. Kelby has 19. How much more?

75 - 19 = 56 cents

200

Avery's shell measured 21 cm. Abi's was 19 cm. What is their combined length?

21 + 19 = 40 cm

300

Andre's desk is 19 in. long. His and Isiah's together are 36 in. How long is Isiah's desk?

19+ ___ = 36 or 36 - 19 = ___. ____ = 17 in.

400

Hope picked 35 apples. Jon picked some more. Together they have 66 apples. How many did he pick?

35 + __ = 66 or 66 - 35 = __. __ = 29

500

Savannah has 13 gems. She put hers with Ysabella's. They have 51 in all. How many does Ysabella have?

13 + __ = 51. or 51 - 13 = __. __ = 38

Make a Ten

100

9 + 8

10 + 7

200

8 + 5

10 + 3

300

5 + 9

4 + 10

400

6 + 8

4 + 10

500

9 + 9

10 + 8