Module 12

Powers of 10

100

6.6 ÷ 1

6.6 ÷ 10

6.6 ÷ 100

6.6 ÷ 1000

6.6 ÷ 1 = 6.6

6.6 ÷ 10 = 0.66

6.6 ÷ 100 = 0.066

6.6 ÷ 1000 = 0.0066

200

278 ÷ 1

278 ÷ 10

278 ÷ 100

278 ÷ 1000

278 ÷ 1 = 278

278 ÷ 10 = 27.8

278 ÷ 100 = 2.78

278 ÷ 1000 = 0.278

300

_________ ÷ 1,000 = 3.64

3,640 ÷ 1,000 = 3.64

400

_______ ÷ 10² = 8.17

817 ÷ 10² = 8.17

500

81 ÷ 10⁰

81 ÷ 10¹

81 ÷ 10²

81 ÷ 10³

81 ÷ 10⁰ = 81

81 ÷ 10¹ = 8.1

81 ÷ 10² = 0.81

81 ÷ 10³ = 0.081

Friendly Numbers

100

21.8 ÷ 6

24 ÷ 6 = 4

200

141.19 ÷ 32

150 ÷ 30 =5

300

158. 2 ÷ 7

140 ÷ 7 = 20

400

183.75 ÷ 18

180 ÷ 20 = 9

500

A ribbon is 0.42 meters long. Sean cuts the ribbon into 9 equal pieces. Is 0.05 meters a reasonable estimate for the length of each ribbon?

Yes.

Division

100

23.56 ÷ 38

0.62

200

27.6 ÷ 6

4.6

300

72.9 ÷ 3

24.3

400

17.28 ÷ 8

2.16

500

331.8 ÷ 42

7.9

Word Problems

100

A peacock's display is 86.25 inches wide. The width of each of its feathers is 1.25 inches. How many feathers wide is the peacock's display?

69

200

Carlos sells coupon booklets for $5.50 a piece. He makes $60.50. Monica sells the same booklets for $4.75 each and makes $57.00. How many booklets does each student sell?

Carlos= 11

Monica = 12

300

Alexa spends $37.74 buying toy train cars for her nieces. How many train cars does Alexa buy?

6

400

Each mint in a roll has a thickness of 0.25 inch. How many mints are in the roll

Whole roll = 3.5 in

14

500

A wood plan measures 92.4 inches long. It is cut into 5 equal pieces. How long is each piece?

18.48