Multiply Decimals

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part. For example, 3.14 is a decimal.

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.

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CCSS.6.NS.B.3

Front

What is the product of 0.5 and 0.2?

Back

The product of 0.5 and 0.2 is 0.1.

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CCSS.6.NS.B.3

Front

What is 3.4 × 2?

Back

3.4 × 2 = 6.8.

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CCSS.6.NS.B.3

Front

How do you round a decimal to the nearest cent?

Back

To round a decimal to the nearest cent, look at the third decimal place. If it is 5 or greater, round up the second decimal place by one. If it is less than 5, keep the second decimal place the same.

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CCSS.5.NBT.A.4

Front

What is the area of a rectangle?

Back

The area of a rectangle is found by multiplying its length by its width. For example, if a rectangle is 5.5 feet long and 3.2 feet wide, the area is 5.5 × 3.2 = 17.6 square feet.

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

What is the cost of 10.5 gallons of gas at $2.89 per gallon?

Back

The cost is 10.5 × 2.89 = $30.35.

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CCSS.6.NS.B.3

Front

How do you find the total cost when buying multiple items?

Back

To find the total cost, multiply the price of one item by the number of items purchased.

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CCSS.7.EE.B.3

Front

What is the product of 3.46 and 3?

Back

The product of 3.46 and 3 is 10.38.

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CCSS.5.NBT.B.7

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to a nearby value that is simpler or more convenient, often to a specified place value.

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3