Count by 2s
Count by 5s
Count by 10s
Count by 100s
100

What is the missing number?

2, 4, 6, __, 10

8

100

What is the missing number?

5, 10, ___, 20, 25

15

100

What is the missing number?

10, 20, ___, 40, 50

30

100

100, 200, ___, 400, 500

300

200

What is the missing number?

10, 12, ___, 16, 18

14

200

What is the missing number?

25, 30, 35, ___,45

40

200

What is the missing number?

80, 70, ___, 50, 40

60

200

233, 333, ___, 533

433

300

What is the missing number?

44, 46, 48, ___, 52

50

300

What is the missing number?

25, 20, 15, ___, 5

10

300

What is the missing number? 

55, 65, ___, 85, 95

75

300

309, ___, 509, 609, 709

409

400

What is the missing number?

60, 58, 56, ___,52

54

400

What is the missing number?

70, 65, ___, 55, 50

60

400

What is the missing number? 

61, 71, 81, __, 101

91

400

400, 300, ____, 100

200

500

What is the missing number?

34, ___, 30, 28, 26

32

500

What is the missing number?

40,___,30, 25, 20

35

500

What is the missing number?

96, 86, 76, ___, 56

66

500

531, 431, 331, ___, 131

231