Addition & Subtraction w/in 20 and Odds vs Evens

Front

What is an odd number?

Back

An odd number is a whole number that cannot be divided evenly by 2. Examples: 1, 3, 5, 7.

Front

What is an even number?

Back

An even number is a whole number that can be divided evenly by 2. Examples: 0, 2, 4, 6.

Front

What is 1 + 1?

Back

2

Front

What is 2 + 2?

Back

4

Front

What is 3 + 3?

Back

6

Front

What is 4 + 4?

Back

8

Front

What is 5 + 5?

Back

10

Front

What is 10 - 5?

Back

5

Front

What is 15 - 7?

Back

8

Front

What is 18 - 10?

Back

8