Operations with Decimals

Front

What is the result of 14 - 8.9?

Back

5.1

Front

What is 13.5 ÷ 5?

Back

2.7

Front

If Josh bought one T-shirt for $7.90 and another for $12.40, what is the total amount he spent?

Back

$20.30

Front

What is the difference of $18 - 3.55?

Back

$14.45

Front

Justin made $46 mowing lawns. After spending $16.54 at the movies, $8.50 at the arcade, and $12.98 at the comic book store, how much money does he have left?

Back

$7.98

Front

What is the definition of a decimal?

Back

A decimal is a fraction expressed in a special form, where the denominator is a power of ten.

Front

What does it mean to add decimals?

Back

To add decimals, align the decimal points and add as you would with whole numbers, placing the decimal point in the sum directly below the other decimal points.

Front

How do you subtract decimals?

Back

To subtract decimals, align the decimal points and subtract as you would with whole numbers, placing the decimal point in the difference directly below the other decimal points.

Front

What is the process for multiplying decimals?

Back

Multiply the numbers as if they were whole numbers, then count the total number of decimal places in both factors and place the decimal point in the product accordingly.

Front

How do you divide decimals?

Back

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