Decimals: Add, Subtract, Multiply, Divide

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 add decimals?

Back

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

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

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 result of 3.69 ÷ 0.9?

Back

4.1

Front

If Jerry bought 6.95 lbs of jelly beans and 1.75 lbs were cherry flavor, how many pounds were lime flavor?

Back

5.2 lbs

Front

If Mrs. Burks spent $3.87 on grapes and bought 3.05 pounds, how much was each pound?

Back

$1.27

Front

How much taller did Paige get if she grew 4.62 cm in the first year and 7.7 cm in the second year?

Back

12.32 cm

Front

What is the total mass of two rocks weighing 41.4 grams and 74.3 grams?

Back

115.7 grams