5th Grade Decimal Multiplication Review

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 multiply a decimal by a whole number?

Back

To multiply a decimal by a whole number, multiply as if there is no decimal. Then, place the decimal point in the product by counting the number of decimal places in the decimal factor.

Front

What is the product of 0.3 and 0.4?

Back

0.3 x 0.4 = 0.12.

Front

If Jan drinks 6.5 ounces of juice each day for 5 days, how much juice does she drink in total?

Back

6.5 ounces/day x 5 days = 32.5 ounces.

Front

How do you calculate the cost of multiple items at a given price per item?

Back

Multiply the price per item by the number of items. For example, if jelly beans cost $8.96 per pound and Juan buys 4 pounds, the cost is $8.96 x 4 = $35.84.

Front

What is the total cost of 3 boxes of diapers if one box costs $34.99?

Back

Total cost = $34.99 x 3 = $104.97.

Front

How do you find the total distance traveled over multiple trips?

Back

Multiply the distance of one trip by the number of trips. For example, if the Williams family drives 85.92 miles each year for 5 years, the total distance is 85.92 miles x 5 = 429.60 miles.

Front

What is the importance of aligning decimal points in multiplication?

Back

Aligning decimal points helps ensure that the multiplication is done correctly and that the decimal point is placed accurately in the final product.

Front

What is the rule for placing the decimal point in the product of two decimals?

Back

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

Front

What is the result of multiplying 0.5 by 0.6?

Back

0.5 x 0.6 = 0.30.