Adding and Subtracting Decimals

Front

What is the sum of 39.9 and 11.67?

Back

51.57

Front

What is 7.2 minus 3.57?

Back

3.63

Front

What is 102 minus 50.5?

Back

51.5

Front

What is the sum of 95.36 and 45.5?

Back

140.86

Front

What is 132.5 minus 45.3?

Back

87.2

Front

Define decimal.

Back

A decimal is a fraction whose denominator is a power of ten, represented with a dot (decimal point).

Front

What does it mean to add decimals?

Back

Adding decimals involves aligning the decimal points and adding the numbers as you would with whole numbers.

Front

What does it mean to subtract decimals?

Back

Subtracting decimals involves aligning the decimal points and subtracting the numbers as you would with whole numbers.

Front

How do you align decimals when adding or subtracting?

Back

You write the numbers one above the other, ensuring the decimal points are in the same vertical line.

Front

What is the value of 0.5 in tenths?

Back

0.5 is equal to 5 tenths.