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Lesson 40

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Lesson 40

Using Zero as a Placeholder

Circle Graphs

Notes

Mental Math

Links

Activity

Proficiency

Homework

Fact Test

- Count up and down by 3’s between 3 and 36.
- 4 x 75279 + 350
- 250 - 199$15 + $7.75
- Double $1.50800/40
- 4 x 12, ÷ 6, x 8, - 4, ÷ 6, x 3, ÷ 2

- When subtracting, multiplying, and dividing
- decimal numbers, we often encounter empty
- decimal places.

- Notes

When this occurs, we will fill each empty decimal place with a zero

In order to subtract, it is sometimes necessary

to attach zeros to the top number

0.5_

-0.32

- Notes

0.2

X 0.3

_._6

draw x problem

0.5

- 0.32

- Circle graphs, which are sometimes called pie graphs or pie charts, displays quantitative information in fractions of a circle.

- Brett collected information from his classmates about their pets. He displayed the information about the number of pets in a circle graph.

http://www.math.com/school/subject1/lessons/S1U4L6GL.html

http://www.kidsmath.com/e_int.html

A

1 ½ + ¾ = 2 ¼

20 ¼ - 2 ¼ = 18 inches

A

1 ½ + ¾ = 2 ¼

20 ¼ - 2 ¼ = 18 inches

A dot cube has six faces. Where two faces meet, there is an edge. How many edges does a dot cube have?

Lesson 59

Practice A-F

Complete #’s 1-10

Fact test G

5

0

:3

0

- .006
- .06
- .6
- 6
- None of the above

5

0

:3

0

- .28
- .32
- .08
- .38
- None of the above

5

0

:3

0

- .048
- .48
- 4.8
- 48
- None of the above

5

0

:3

0

- .24
- .144
- 1.44
- .0144
- None of the above

5

0

:3

0

- ¼
- 75%
- 25%
- ¾
- None of the above