Envision Math Grade 5 Topic 4

Multiplying Decimals by 10, 100, and 100

100

Triple Points (300 Points)

0.365 x 100

36.5

200

Double Points (400 Points)

0.001 x 10

0.01

300

Double Points (600 Points)

7.25 x 1000

7250

400

Double Points (800 Points)

0.004 x 10^3

4

500

Double Points (1,00 Points)

6.02 x 10^2

602.0

Place Value Blocks

100

Use Place value blocks

3.3 x 3

9.9

200

Double Points (400 points)

Use Place value blocks

4 x 0.46

1.84

300

Use the grid

0.5 x 0.2

0.1

400

Double Points (800 Points)

Use the gird

0.4 x 0.1

0.04

500

Use place value blocks

4 x 0.6

2.4

Multiplying a Decimal by a Whole Number

100

6.22 x 3

18.66

200

Double Points (400 Points)

12 x 4.8

57.6

300

Double Points (600 Points)

9 x 0.23

2.07

400

405 x 0.47

190.35

500

170 x 0.003

0.51

Multiplying Two Decimals

100

Double Points (200 Points)

1.2 x 3.6

4.32

200

0.4 x 0.7

0.28

300

8.6 x 0.08

0.688

400

Double Points (800 Points)

18.1 x 3.7

66.97

500

3.2 x 2.8

8.96

Word Problems

100

Triple Points (300 points)

The wings of a hummingbird beat an average of 52 times per second. If it hovers for 35.5 seconds, on average how many times does its wings beat?

1846 times

200

Erin wants to buy 11 bars of soap. One bar of soap costs $1.60. How much will the 11 bars cost?

$17.60

300

The airline that Mrs. Hamilton is using has a baggage weight limit. He has 5 bags weighing 18.4 pounds each. What is the combined weight of her baggage?

92

400

Double Points (800 Points)

Gavin had 7 apples weighing 5.89 pounds each. How much did the apples weigh all together.

41.23

500

Nessa practices gymnastics 6 days per week. If she practices a total of 4.5 hours each day, how many hours does the Nessa practice?

27