Decimal Multi-Digit Multiplication

Front

What is decimal multiplication?

Back

Decimal multiplication is the process of multiplying numbers that have decimal points, which involves aligning the numbers and placing the decimal point in the product correctly.

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 decimal.

Front

What is the product of 2.9 and 3.5?

Back

10.15

Front

What is the product of 4.3 and 83?

Back

356.9

Front

How do you place the decimal in a multiplication problem?

Back

Count the total number of decimal places in the factors. The product's decimal point is placed to the left of the last digit, equal to that total.

Front

What is the product of 15.7 and 28?

Back

439.6

Front

What is the product of 3.9 and 2.6?

Back

10.14

Front

What is the importance of aligning decimal points in multiplication?

Back

Aligning decimal points ensures that the multiplication is done correctly, and helps in placing the decimal point in the final answer.

Front

What is the product of 4.56 and 34.98?

Back

159.5088

Front

What is a common mistake when multiplying decimals?

Back

A common mistake is forgetting to count the decimal places correctly when placing the decimal point in the product.