Ordering to 100

Front

What is the next number in the sequence: 10, 20, __, 40?

Back

30

Front

What is the next number in the sequence: 60, __, 80, 90, 100?

Back

70

Front

What is the next number in the sequence: 21, __, 23, 24?

Back

22

Front

What is the next number in the sequence: 69, 70, 71, __?

Back

72

Front

What is the next number in the sequence: 45, 50, 55, __?

Back

60

Front

What is the next number in the sequence: 1, 2, __, 4?

Back

3

Front

What is the next number in the sequence: 5, 10, __, 20?

Back

15

Front

What is the next number in the sequence: 30, __, 50, 60?

Back

40

Front

What is the next number in the sequence: 15, 20, __, 30?

Back

25

Front

What is the next number in the sequence: 100, 90, __, 70?

Back

80