Powers of Ten
Estimating Products
Three-Digit by Two-Digit
Numbers with Zeros
Word Problems
100

The answer to the following:

41*103


What is 41,000

100

Estimate the product of:

25 * 191

What is 5,000.

100

Find the product of:

90 * 59 =

What is 5,310.

100

Find the product:

280 * 66 =

What is 18,480.

100

Barry bought 2,310 gumballs. May bought 4 times as many gumballs as Barry. Write and solve an equation to find g, the number of gumballs May ordered.

What is 2,310 * 4 = g; g = 9,240.

200

The answer to the following:

250*100

What is 250.

200

Estimate the product of:

300 * 118

What is 30,000.

200

Find the product of:

81 * 11 =

What is 891.

200

Find the product:

902 * 35 =

What is 31,570.

200

Ms. Michaela works about 178 hours each month. Wwhich of the following is the best estimate of the number of hours she works in a year?

A) 200 * 20

B) 180 * 10

C) 100 * 12

D) 100 * 10

What is B, 180 * 10.

300

The answer to the following:

52*105

What is 5,200,000.

300

Which does NOT show a reasonable estimate of:

24 * 338?

A) 6,000

B) 7,000

C) 7,500

D) 10,000

What is 10,000.

300

Find the product of:

64 * 475 =

What is 30,400.

300

Find the product:

510 * 72 =

What is 36,720.

300

We bought 25 packages of juice boxes. Each package has 12 juice boxes inside. How many total juice boxes do we have?

What is 300 juice boxes.

400

Which equations are true?

A) 52 * 1000 = 5,200

B) 52 * 102 = 5,200

C) 52 * 104 = 520,000

D) 52 * 103 = 5,200

E) 52 * 10= 52,000

What are B, C, and E.

400

Is 500 an underestimate or overestimate for the product of 12 and 53?

What is underestimate.

400

A gerbil's heart beats 360 times per minute. How many times does a gerbil's heart beat in one hour?

What is 21,600 beats in one hour.

400

There are 26 students in our class. Each student has read 37 pages of The Westing Game, 15 pages on Commonlit.org, and 10 pages of research. Find the total number of pages our class has read so far this year.

What is 1,612 pages.

400

Brandi's savings goal for the year is $4,200. She saves $450 per month from her paycheck for a year. She says, "Since $450 * 10 = $4,500, I made my savings goal." Do you agree with Brandi? Explain.

What is yes. Because Brandi rounded 12 down to 10, her answer is an underestimate and she will actually save more than $4,500 over the year.

500

A truck is carrying bushels of fruit. There are 10bushels of apples, 10bushels of oranges, and 103 bushels of peaches. What is the total weight of the crops?

A bushel of apples weighs 34 pounds. A bushel of oranges weighs 37 pounds. A bushel of peaches weighs 36 pounds.

What is 40,040 pounds.

500

Abby counts 12 large boxes and 18 small boxes of pencils in the supply cabinet. Each large box contains 144 pencils. Each small box contains 24 pencils. Estimate the total number of pencils. Is your estimate an overestimate or an underestimate?

What is 1,800 pencils; underestimate.

500

Costco sells chocolate in cases. There are 24 chocolate bars in each box. There are 12 boxes in each case. Costco sold 52 cases of chocolate on Tuesday and 43 cases of chocolate on Wednesday. How many bars of chocolate did Costco sell in all?

What is 27,360 bars of chocolate.

500

What are two partial products you would add to find 41 * 709?

What are 709 and 28,360.

500

There are 52 fireworks in a container. Fireworks are sold by the pallet and each pallet has 34 containers. If a store sells 15 pallets of fireworks on Thursday and 12 pallets of fireworks on Friday, how many fireworks did it sell in all over the two days?

What is 47,736 fireworks.

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