Multiplying and Dividing Decimals

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It uses a decimal point to separate the whole number part from the fractional part.

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.

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 becomes 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.

Front

Calculate: 3.5 x 2.4

Back

8.4

Front

Calculate: 0.6 x 0.7

Back

0.42

Front

What is the first step in solving a decimal multiplication problem?

Back

The first step is to ignore the decimal points and multiply the numbers as if they were whole numbers.

Front

Calculate: 5.2 ÷ 0.4

Back

13

Front

What does rounding to the nearest tenth mean?

Back

Rounding to the nearest tenth means looking at the hundredths place (the second digit after the decimal) and deciding whether to round the tenths place (the first digit after the decimal) up or keep it the same.

Front

Calculate: 7.8 ÷ 3.9

Back

2.0

Front

What is the total cost if an item costs $2.50 and you buy 4 of them?

Back

$10.00