Doubles + 1

Front

What is a doubles + 1 fact?

Back

A doubles + 1 fact is a math equation where you take a number, double it, and then add 1. For example, 4 + 1 = 5 is a doubles + 1 fact because 4 doubled is 8, and 8 + 1 = 9.

Front

What is 8 + _____ = 17?

Back

9

Front

What is 5 + 6?

Back

11

Front

Which of these is a doubles + 1 fact: 5 + 6, 8 + 9, 10 + 11, or 5 + 10?

Back

5 + 6 is a doubles + 1 fact.

Front

What is 7 + 8?

Back

15

Front

What is the doubles + 1 fact for the number 6?

Back

5 + 6 = 11.

Front

If 3 + 4 = 7, what doubles + 1 fact does it represent?

Back

3 + 4 is a doubles + 1 fact because 3 doubled is 6, and 6 + 1 = 7.

Front

What is the result of doubling 4 and adding 1?

Back

9

Front

Which equation is NOT a doubles + 1 fact: 5 + 6, 8 + 9, 10 + 11, or 5 + 10?

Back

5 + 10 is NOT a doubles + 1 fact.

Front

What is the doubles + 1 fact for the number 2?

Back

1 + 2 = 3.