Show:
Multiplication
Area model or traditional
Long Division
Extended Multiplication
Basic Division
Surprise
100

135 x 7

945

100
312 / 3
104
100

90 x 800

72,000

100

35/5

7
100

Think about the problem 45 x 72. What would be a reasonable estimate for this problem? Explain your thinking.

50 x 70 = 3,500. Round 45 up to 50 and round 72 down to 70. 

200

49 x 32

1,568

200

327/5

65 r2

200

60 x 40

2,400

200

49/8

6 r1

200

Think about the problem 36 x 87. What would be a reasonable estimate for this problem? Explain your thinking.

40 x 90 = 3,600. You would round 36 up to 40 and round 87 up to 90. 

300

99 x 54

5,346

300

9342 / 4

2335 r2

300

36 x 7

252

300

She counted her crayons and found out that she has 80 crayons which she will place in crayon boxes. Every crayon box can contain 8 crayons. How many crayon boxes does she need?

She needs 10 crayon boxes.

300
Jack P. has 315 goats. Maddie has 6 times as many goats as Jack P. How many goats does Maddie have? 

1,890 goats

400

178 x 5

890

400

785/4

196 r 1

400

200 x 700

140,000

400

75/4

18 r3

400

Mrs. McArthur has ordered 526 crumbl cookies for the whole school. If 9 cookies fit in each box, how many boxes will she need? Explain your thinking. 

BONUS POINTS POSSIBLE ON THIS ONE! 

59 boxes.

526/9 is 58 with a remainder of 4. You will need an extra box for those 4 cookies, so you will need 59 boxes total. 

500

72 x 47

3,384


500

1,956/3

652

500

6 x 92

552

500

62/7

8 r6

500
Luke has 346 fidgets. He wants to share them between 6 friends. How many fidgets will each friend get? How many left overs would there be? 

Each friend would get 57 fidgets. There would be 4 fidgets left over.