Easy Peasy

Estimating

Multiplying 3's and 2's

Multiplying with 0's

Multiplying by Powers of 10

100

What is Ms. R's favorite land animal?

Cows!

100

Estimate 180 x 586. There's only one correct answer here!

120,000. 180 rounds to 200, 586 rounds to 600, which makes the estimated product 120,000

100

3 x 2

6!

100

10 x 10

100

100

72 x 10

720

200

How many daughters does Mr. B have?

2!

200

Estimate 19 x 513. Remember, only one answer here!

10,000

200

100 x 25

2,500

200

108 x 58

6,264

200

64 x 10^{3}

64,000

300

What is Ms. R's favorite sea animal?

Sharks!

300

Estimate 102 x 28

3,000

300

81 x 11

891

300

207 x 61

12,627

300

80 x 10^{2}

8,000

400

What is Mr. B's first name?

Mark!

400

Ms. R estimates that there are about 40 kids in the classroom, is this an overestimate or under estimate?

Overestimate, there are 26 kids which estimates closer to 30

400

222 x 75

16,650

400

505 x 77

38,885

400

372 x 10^{4}

3,720,000

500

What was Monday's holiday?

National Chocolate Milk Day!

500

Ms. R has about 30 dogs that all weigh the same and they collectively all weigh about 1,200 pounds. About how much does each dog weigh?

Each dog weighs about 40 pounds. 30 dogs x 40 pounds equals 1,200 pounds for all dogs.

500

659 x 42

27,678

500

380 x 40

15,200

500

408 x 10^{9}

408,000,000,000

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