In this worksheet, we will practice using rounding and compatible numbers to estimate the product of two decimal numbers.
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?
Which of the following is closest to the result of after rounding one of the two numbers to 10, 100, or 1,000?
- B 28,426
- D 2,842.6
- E 284,260
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?
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