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100

2, 4, 6, ___, ___, ___, ___, 

8, 10, 12, 14

100

3 + ___ = 4

1

100

a + 4 = 10

a = 6

100

Start with 2, then add 2

2,4,6,8,10,12,

100

4 x 3 = 

12

200

4, 8, 12, ___, ___, ___, ___,

16, 20, 24, 28

200

5 - ___ = 3

2

200

a - 5 = 3

a = 8

200

Start with 1, then add 2

1,3,5,7,9,11,

200

What is half of 80? 

40

300

25, 30, 35, 40, ___, ___, ___, ___, 

45, 50, 55, 60

300

2 x ____ = 12

6

300

5a = 35

a = 7

300

Start with 3, then add 3

3,6,9,12,15,18,21,24

300

20 + 30 = 

50

400

96, 86, 76, ___, ___, ___, ___, 

66, 56, 46, 36

400

20 divided by 5 = _____

4

400

a divided by 2 = 6 

a = 12

400

Start with 1, then add 3

1,4,7,10,13,16,19,22

400

Double 16

32

500

110, 107, 104, ___, ___, ___, ___, 

101, 98, 95, 92, 

500
2 + 7 = 6 + ____

3

500

2a + 3 = 13

a = 5

500

Start with 100, subtract 6

100, 94, 88, 82, 76, 70, 64, 

500

54 + 10 + 10 - 10 = 

64