Doubles and Doubles Plus 1

Front

What is a double in addition?

Back

A double in addition is when you add a number to itself, like 4 + 4.

Front

What is doubles plus one?

Back

Doubles plus one is when you take a double and add one more, like 4 + 4 + 1 = 9.

Front

What is 6 + 6?

Back

12

Front

What is 8 + 8?

Back

16

Front

What is 11 + 11?

Back

22

Front

What is 9 + 9?

Back

18

Front

What is 7 + 7?

Back

14

Front

What is 6 + 7?

Back

13

Front

What is 8 + 9?

Back

17

Front

What is 10 + 10?

Back

20