Adding, Subtracting, and Multiplying Decimals Review

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a dot (.) to separate the whole number from the fractional part.

Front

How do you add decimals?

Back

Align the decimal points and add as you would with whole numbers, then place the decimal point in the answer directly below the other decimal points.

Front

How do you subtract decimals?

Back

Align the decimal points and subtract as you would with whole numbers, then place the decimal point in the answer directly below the other decimal points.

Front

What is the rule 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

What is the product of 2.9 and 3.7?

Back

10.73

Front

What is 81.9 multiplied by 0.5?

Back

40.95

Front

What is 0.2 multiplied by 0.8?

Back

0.16

Front

What is the product of 22.2 and 0.44?

Back

9.768

Front

If a cat is 16.4 cm tall, how high can it jump if it jumps five times its height?

Back

82 cm

Front

What is the first step in multiplying decimals?

Back

Multiply the numbers as if they were whole numbers.