Multiply 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, first 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 estimation in multiplication?

Back

Estimation in multiplication involves rounding numbers to make calculations easier and quicker, allowing you to get a rough idea of the product.

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CCSS.4.NBT.B.5

Front

Estimate the product of 7.24 and 3.9 by rounding.

Back

Round 7.24 to 7 and 3.9 to 4. The estimated product is 7 x 4 = 28.

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CCSS.5.NBT.B.7

Front

What is the area of a rectangle?

Back

The area of a rectangle is calculated by multiplying its length by its width. Area = length x width.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

Calculate the area of a sheet of paper that is 8.5 inches by 11 inches.

Back

Area = 8.5 x 11 = 93.5 square inches.

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

How do you find the total cost of multiple items?

Back

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

Tags

CCSS.3.OA.D.8

Front

If a cookbook costs $17.75 and 342 copies are sold, how much money is made?

Back

Total money made = 342 x 17.75 = $6070.50.

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CCSS.6.NS.B.3

Front

What is the product of 82 and 0.13?

Back

82 x 0.13 = 10.66.

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CCSS.6.NS.B.3

Front

How do you calculate the cost of an item based on weight?

Back

To calculate the cost based on weight, multiply the weight of the item by the price per unit weight.

Tags

CCSS.6.RP.A.3B