Adding and Subtracting Decimals

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a dot (.) to separate the whole number from the fractional part.

Tags

CCSS.3.NF.A.3C

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

Tags

CCSS.5.NBT.B.7

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.

Tags

CCSS.5.NBT.B.7

Front

What is the difference between 9.28 and 0.54?

Back

8.74

Tags

CCSS.6.NS.B.3

Front

What is 94 minus 4.8?

Back

89.2

Tags

CCSS.6.NS.B.3

Front

What is 7.9 minus 3.47?

Back

4.43

Tags

CCSS.6.NS.B.3

Front

What is the sum of 55.78 and 4.6?

Back

60.38

Tags

CCSS.6.NS.B.3

Front

If Chicago was predicted to receive 1.254'' of rain and actually received .875'', how far was the prediction off?

Back

.379''

Tags

CCSS.7.NS.A.3

Front

What is the first step in adding decimals?

Back

Align the numbers by the decimal point.

Tags

CCSS.5.NBT.B.7

Front

What should you do if the numbers have different lengths when adding or subtracting decimals?

Back

You can add zeros to the end of the shorter number to make them the same length.

Tags

CCSS.5.NBT.B.7