Multiplying Whole Numbers by Decimals

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It represents a part of a whole number, using a dot (.) to separate the whole number from the fractional part.

Front

How do you multiply a whole number by a decimal?

Back

To multiply a whole number by a decimal, multiply as if there were no decimal, then count the total number of decimal places in the numbers being multiplied and place the decimal point in the product accordingly.

Tags

CCSS.5.NBT.B.7

Front

What is the product of 0.5 and 6?

Back

3.0

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CCSS.6.NS.B.3

Front

What is the estimated product of 18.4 and 10 when rounded to the nearest ten?

Back

200

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CCSS.5.NBT.B.7

Front

What is the product of 1.87 and 9?

Back

16.83

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CCSS.6.NS.B.3

Front

What is the product of 6.41 and 3?

Back

19.23

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CCSS.6.NS.B.3

Front

If a package weighs 58.5 pounds, how much do 16 packages weigh?

Back

936 pounds (exact), but estimated to about 1,200 pounds.

Tags

CCSS.5.NBT.B.7

Front

What does rounding mean in multiplication?

Back

Rounding means adjusting a number to the nearest specified value, making it easier to estimate the product.

Tags

CCSS.4.NBT.B.5

Front

What is the importance of estimating products?

Back

Estimating products helps to quickly assess the reasonableness of an answer and simplifies calculations.

Tags

CCSS.4.NBT.B.5

Front

What is the difference between a whole number and a decimal?

Back

A whole number is a number without fractions or decimals, while a decimal includes a fractional part represented by digits after a decimal point.

Tags

CCSS.5.NBT.A.2