# Worksheet: Estimating the Product of Two Decimals

In this worksheet, we will practice using rounding and compatible numbers to estimate the product of two decimal numbers.

Q1:

Which of the following is the nearest to upon rounding one of the two numbers to either 10, 100, or ?

• A547.8
• B 54,780
• C54.78
• D 5,478
• E 547,800

Q2:

Engy wants to buy a pair of jeans that cost \$49.99. The sign on the display says that the jeans are off. Which expression can be used to estimate the discount?

• A
• B
• C
• D
• E

Q3:

Which of the following is closest to the result of after rounding one of the two numbers to 10, 100, or 1,000?

• A284.26
• B 28,426
• C28.426
• D 2,842.6
• E 284,260

Q4:

The average person blinks about 900 times an hour.

By rounding the number of hours in a day to the nearest ten, estimate how many times a person blinks in a day.

Is this estimate more or less than the actual number of times a person blinks in a day?

• ALess
• BMore

Q5:

Nada’s shower uses 7.8 litres of water per minute.

By rounding the number of litres to the nearest whole number, estimate how many litres she will use if her shower lasts 9 minutes.

Calculate exactly how many liters of water a 12-minute shower will consume.

• A 93.6 litres
• B 78.3 litres
• C 104.4 litres
• D 70.2 litres
• E 163.8 litres

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