Unit 6 Review Multiply Multi-Digit Numbers with Decimals

Front

What is the process of estimating the product of two decimal numbers?

Back

To estimate the product of two decimal numbers, round each number to a convenient value (usually to the nearest whole number or to one decimal place) and then multiply the rounded numbers.

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 point, then place the decimal point in the product based on the number of decimal places in the original decimal.

Front

What is the result of multiplying 5.19 by 100?

Back

The result of multiplying 5.19 by 100 is 519.

Front

How do you round the number 5.73 to estimate the product with 3.16?

Back

To round 5.73 for estimation, you can round it to 6.

Front

What is the estimated product of 13.6 and 9.82 when rounded?

Back

The estimated product of 13.6 and 9.82 is approximately 140 when rounded.

Front

What is the product of 3.7 and 0.43?

Back

The product of 3.7 and 0.43 is 1.591.

Front

What is the importance of rounding in multiplication of decimals?

Back

Rounding simplifies calculations and helps to quickly estimate the result without needing exact values.

Front

What is the product of 6.53 and 100?

Back

The product of 6.53 and 100 is 653.

Front

What is the general rule for multiplying two decimal numbers?

Back

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

Front

How do you determine the number of decimal places in a product?

Back

Count the total number of decimal places in both factors before multiplying, and that total will be the number of decimal places in the product.