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 dot (decimal point) separating the whole number 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 value of 0.84 ÷ 0.3?

Back

2.8

Front

How do you divide decimals?

Back

To divide decimals, move the decimal point in the divisor to the right until it is a whole number, then move the decimal point in the dividend the same number of places and divide as usual.

Front

What is the value of 7 × 0.8?

Back

5.6

Front

What does it mean to estimate a product?

Back

Estimating a product means finding a close approximation of the actual product, often by rounding the numbers to make the multiplication easier.

Front

What is the best estimate for 6 × $3.52?

Back

$24

Front

What is the value of 2.9 × 10^3?

Back

2900

Front

How do you find the number of items from total earnings and price per item?

Back

Divide the total earnings by the price per item to find the number of items.

Front

If Mack earned $50.70 mowing lawns and earned $8.45 for each lawn, how many lawns did he mow?

Back

6 lawns