Decimal Multiplication & Division

Front

What is decimal multiplication?

Back

Decimal multiplication is the process of multiplying numbers that have decimal points. It involves aligning the numbers, ignoring the decimal points during multiplication, and then placing the decimal point in the product based on the total number of decimal places in the factors.

Front

How do you divide a number by a decimal?

Back

To divide a number by a decimal, you can multiply both the dividend and the divisor by 10, 100, or another power of 10 to eliminate the decimal. Then, perform the division as usual.

Front

What is the product of 39.4 and 1.7?

Back

66.98

Front

What is 5468 divided by 0.4?

Back

13,670

Front

If a recipe calls for 4 cans of 12.6 oz of chicken broth, how many ounces are needed in total?

Back

50.4 oz

Front

How many ounces are in one serving if a 128 ounce carton of milk has 20 servings?

Back

6.4 oz

Front

What is the total cost if Mrs. Hoskins buys 4 tomato plants for $2.59 each, a package of watermelon seeds for $1.87, and a jalapeno plant for $3.88?

Back

$16.11

Front

What is the first step in multiplying decimals?

Back

The first step is to ignore the decimal points and multiply the numbers as if they were whole numbers.

Front

How do you determine the placement of the decimal point in the product of two decimal numbers?

Back

Count the total number of decimal places in both factors. The decimal point in the product should be placed to the left of the last digit, equal to that total.

Front

What is the rule for dividing by a decimal?

Back

When dividing by a decimal, convert the divisor to a whole number by multiplying by 10, and do the same to the dividend.