Decimal Operations

Front

What happens to the decimal in the dividend when you move the decimal in the divisor?

Back

The decimal moves the same amount in the dividend that it moved in the divisor.

Front

What is the result of 7.9 - 3.47?

Back

4.43

Front

If Mr. Weinheimer has $20.08 and buys donuts for $8.72, how much does he have left?

Back

$11.36

Front

How far does Jackie travel if she rides around a trail of 8.54 miles 4 times?

Back

34.16 miles

Front

If Shelly pays $7.59 for a book with a $10 bill, how much change does she get back?

Back

$2.41

Front

What is the definition of a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point.

Front

How do you add decimals?

Back

Align the decimal points and add as you would whole numbers, then place the decimal point in the sum.

Front

What is the process for subtracting decimals?

Back

Align the decimal points, subtract as you would whole numbers, and place the decimal point in the difference.

Front

What is the rule for multiplying decimals?

Back

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

Front

How do you divide decimals?

Back

Move the decimal in the divisor to make it a whole number, then move the decimal in the dividend the same number of places.