multiplying/dividing decimals & whole numbers

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 a decimal by a whole number?

Back

To multiply a decimal by a whole number, multiply as if there were no decimal, then place the decimal point in the product based on the number of decimal places in the original decimal.

Front

What is the cost per item?

Back

The cost per item is calculated by dividing the total cost by the number of items.

Front

How do you divide a decimal by a whole number?

Back

To divide a decimal by a whole number, divide as if there were no decimal, then place the decimal point in the quotient directly above the decimal point in the dividend.

Front

What is the formula to find the total cost?

Back

Total Cost = Cost per Item x Number of Items.

Front

If a dozen roses cost $29.88, how do you find the cost of one rose?

Back

Divide the total cost by 12 (the number of roses): $29.88 ÷ 12 = $2.49.

Front

What is the product of 3.7 and 0.43?

Back

3.7 x 0.43 = 1.591.

Front

How do you calculate the total amount needed for multiple students?

Back

Multiply the amount needed per student by the number of students.

Front

What is the significance of the decimal point in multiplication?

Back

The decimal point indicates the value of the number; its position affects the size of the product.

Front

How do you convert ounces to gallons?

Back

There are 128 ounces in a gallon. To convert ounces to gallons, divide the number of ounces by 128.