What is the Missing Number?

Mystery Masters

100

7 + __ = 23

What is 16

200

52 - __ = 10

What is 42.

300

12 + __ = 29

What is 17.

400

44 -__ = 24

What is 20

500

35 + _____ = 50

What is 15

Missing Numbers

100

23 + __ = 30

What is 7

200

43 - 12 = 

What is 31

300

13 + __ = 44

What is 31.

400

13 = 2 + __

What is 11

500

24 = 20 + __

What is 4

What's the Number?

100

35 - __ = 20

What is 15

200

33 + __ = 73

What is 40.

300

24 - 13 =

What is 11

400

34 + __ = 36

What is 2

500

89 = 80 + __

What is 9

Secret Digits

100

11 + __ = 20

What is 9.

200

42 - __ = 1

What is 41.

300

41 - __ = 27

What is 14

400

23 + 8 = 

What is 31

500

28 = 40 - __

What is 12

Find the Number

100

23 - __ = 4

What is 19.

200

13 + __ = 25

What is 12.

300

10 = 14 - __

What is 4

400

28 = 20 + __

What is 8.

500

43 = 10 + __

What is 33