Addition and subtraction within 20 Assessment

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another.

Front

What does the plus sign (+) mean?

Back

The plus sign means to add numbers together.

Front

What does the minus sign (-) mean?

Back

The minus sign means to take away or subtract.

Front

If you have 9 apples and you add 4 more, how many apples do you have?

Back

You have 13 apples.

Front

If you have 15 apples and give away 5, how many do you have left?

Back

You have 10 apples left.

Front

What is the equation for 5 added to 3?

Back

5 + 3 = 8.

Front

What is the equation for 10 minus 4?

Back

10 - 4 = 6.

Front

What is counting on in addition?

Back

Counting on is starting from the first number and counting up to find the total.

Front

What is a missing number problem?

Back

A missing number problem asks you to find a number that makes an equation true.