Estimation
1-digit by multi-digit multipliation
2-digit x 2-digit
3-digit x 2-digit
Word Problems
100
Estimate 3x47 by rounding to the highest place.
150
100
30 x 2
60
100
80 x 60
4,800
100

125 x 63

7,875

100

Ravinia Elementary has 3 fourth grade classrooms, and each classroom has 18 students. Estimate how many students are in the fourth grade at Ravinia Elementary.

about 60

200
Estimate 4 x 107 by rounding to the highest place.
400
200
47 x 8 =
376
200
50 x 45 =
2,250
200

164 x 37

6,068

200

Mrs. K made 47 chocolate chip cookies, and each cookie has 12 chocolate chips. Estimate how many chocolate chips she used.

About 500.

300
Estimate 56 x 82 by rounding to the highest place.
4,800
300
103 x 6 =
618
300
21 x 87 =
1,827
300

205 x 18

3,690

300

Mr. Daly brings candy for his students. He has 21 students and each student gets 4 pieces of candy. How much candy did he bring?

84 pieces of candy

400
Estimate 15 x 38 by rounding to the highest place.
800
400
321 x 9
2,889
400
35 x 68 =
2,380
400

294 x 76

22,344

400

Mrs. K made 47 chocolate chip cookies, and each cookie has 12 chocolate chips. How many chocolate chips did she use? 

563 chocolate chips

500
Estimate 165 x 534 by rounding to the highest place.
100,000
500

4,382 x 7 =

30,674

500

127 x 64 =

8,128

500

394 x 92 

36,248

500

A girl scout troop sells 425 boxes of Thin Mints and 211 boxes of Caramel de Lites in 1 week. If they sell the same amount every week, how many boxes of cookies do they sell in 4 weeks?

2,544 boxes of cookies

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