counting
Addition by 3
100

What is 5 + 3

The answer is 8

200

What is 8 + 3?

11

300

What number is missing? 5, 6, _, 8, 9, 10

7

300

What is 7 + 3?

10

400

What is 6 + 3?

9

500

What is 11 + 3? 

14