Addition and Subtraction

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 finding the difference between two numbers by taking one number away from another.

Front

What is the sum of 13 and 45?

Back

58

Front

What is the sum of 64 and 16?

Back

80

Front

What is 89 minus 62?

Back

27

Front

What is 99 minus 27?

Back

72

Front

Which expression does NOT have a sum of 16? 6 + 12, 8 + 8, 16 + 0, or 7 + 9?

Back

6 + 12 does not have a sum of 16.

Front

What is a number line?

Back

A number line is a straight line with numbers placed at equal intervals along its length, used to represent numbers visually.

Front

What does 'sum' mean?

Back

The sum is the result of adding two or more numbers together.

Front

What does 'difference' mean?

Back

The difference is the result of subtracting one number from another.