Multiply and Divide Decimals

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

Front

How do you multiply decimals?

Back

To multiply decimals, multiply the numbers as if they were whole numbers, then count the total number of decimal places in both numbers and place the decimal point in the product accordingly.

Tags

CCSS.6.NS.B.3

Front

What is the rule for dividing decimals?

Back

To divide decimals, move the decimal point in the divisor (the number you are dividing by) to the right until it is a whole number. Move the decimal point in the dividend (the number being divided) the same number of places to the right, then divide as usual.

Tags

CCSS.5.NBT.B.6

CCSS.6.NS.B.2

Front

Calculate: 7.8 ÷ 0.03

Back

260

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CCSS.6.NS.B.3

Front

Calculate: 5.75 ÷ 0.25

Back

23

Tags

CCSS.6.NS.B.3

Front

Calculate: 1.44 ÷ 0.4

Back

3.6

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CCSS.5.NBT.B.7

Front

Calculate: 0.6 ÷ 5

Back

0.12

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CCSS.5.NBT.B.7

Front

Calculate: 45.1 x 7

Back

315.7

Tags

CCSS.6.NS.B.3

Front

What is the value of 0.1 in decimal form?

Back

0.1 is already in decimal form and represents one-tenth.

Tags

CCSS.5.NBT.A.3A

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting its value to make it simpler while keeping it close to the original value. For example, rounding 2.67 to one decimal place gives 2.7.

Tags

CCSS.5.NBT.A.4