STAAR-Multiply Decimals

Front

What is the rule for determining the number of decimal places in the product of two decimal numbers?

Back

Count the total number of digits to the right of the decimal points in both numbers. The product will have that many digits to the right of the decimal.

Front

How do you multiply decimals?

Back

Multiply the numbers as if they were whole numbers, then place the decimal point in the product based on the total number of decimal places from the factors.

Front

Do you need to line up the decimals when multiplying?

Back

No, you do not need to line up the decimals when multiplying.

Front

What is 3.45 × 9.7?

Back

33.465

Front

If Jackie rode her bike 8.54 miles around a park 4 times, how do you find the total distance?

Back

Multiply 8.54 by 4 to get 34.16 miles.

Front

What is the product of 3.57 and 4.6?

Back

16.422

Front

How do you convert a decimal to a fraction?

Back

Write the decimal as a fraction with the decimal number as the numerator and a power of 10 as the denominator, then simplify.

Front

What is the decimal equivalent of 3/4?

Back

0.75

Front

What is the importance of estimating products of decimals?

Back

Estimating helps to check if the final answer is reasonable and to make calculations easier.

Front

What is the product of 0.5 and 0.2?

Back

0.1