Estimation
Powers of 10
Two-Digit by Two-Digit
Two-Digit by Three-Digit
100

Estimate the product of 29 and 604

18,000

100

Is this equation correct? 83 × 104 = 83,000

No. 83 x 104 = 830,000

100

18 × 42

756

100

A store orders 22 boxes of light bulbs. Each box has 148 bulbs. How many light bulbs does the store order?

3,256

200

Estimate the product of 306 and 674 by rounding to the nearest hundred.

210,000

200

34 x 100

34

200

Linnea reads for 45 minutes a night every day. How many minutes has she read by the end of three weeks?

945 minutes

200

An office manager buys 34 chairs for the new office. Each chair costs $205. What is the total amount the office manager pays for chairs?

$6,970

300

A daycare charges $195 per week for each child that attends. There are 51 children that attend each week.What is the best estimate for the total amount of money the daycare receives each week?

$10,000

300

What exponent makes this true: 86 x 10? = 86,000

3

300

There are 33 students in Ms. Horseman's class. If each student gets 14 Paw Bucks, how many Paw Bucks do they have in all?

462 Paw Bucks

300

A campground rents canoes for $36. In June, 109 canoes were rented by campers. Write and solve an equation to represent how much money the campground made from canoe rentals.

$39 x 109 rented canoes= $3,924

400

At the beginning of the season, a golf coach buys 118 sleeves of golf balls. Each sleeve costs $8. Should he overestimate or underestimate the cost?

Overestimate so he knows he will have enough money for the golf balls

400

True or False: 60 x 10= 6,000 x 102

True

400

In the month of October, Ms. Horseman's evil twin assigns 25 math problems a night (even on weekends!). How many math problems do her poor students have to complete?

Hint: there are 31 days in October

775

400

209 x 84

17,556

500

A cleaning service orders 7 large bottles and 14 small bottles of a cleaning product.Each large bottle has 124 ounces. Each small bottle has 64 ounces.Which is the closest estimate of the total amount of cleaning product the cleaning service orders?

1,800 ounces

500

True or False: 5 x 105 = 50 x 100,000

False

500

The Hutt family has bought one pizza a week for the past 14 years. How many pizzas have they bought altogether?

Hint: a year has 52 weeks

728 pizzas

500

An apartment building has 24 apartments. The floor area of each apartment is 782 square feet. What is the total area for the apartments?

18,768 square feet