A.18 Sequences – count up and down by 1, 2, 3, 5 and 10

Sequences – count up and down by 1, 2, 3, 5 and 10

Learn with an example

✈️Type the missing number in this sequence:

93,_______, 99, 102, 105, 108

First, look for a pattern. Notice how each number is 3 more than the previous number:
93, __, 99, 102, 105, 108
To make the pattern complete, the number 96 must go in the blank space.

✈️Type the missing number in this sequence:

107, 108, 109,____, 111, 112, 113

First, look for a pattern. Notice how each number is 1 more than the previous number:
107, 108, 109, __, 111, 112, 113
To make the pattern complete, the number 110 must go in the blank space.

✈️Type the missing number in this sequence:

60, 70, 80, 90, 100, 110,_____

First, look for a pattern. Notice how each number is 10 more than the previous number:
60, 70, 80, 90, 100, 110, __
To make the pattern complete, the number 120 must go in the blank space.

Let’s practice!