Page 217 - NUMINO TG_6A
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14Unit 100%

jOb ective Learn about percentages and different ways of expressing percentages.

1. Textbook Instructions 14 100%

In this unit, students will learn about different The square is divided into 100 equal parts. Show the colored parts
ways of expessing percentages. using different methods.

Explain to students how to express the same 75 % 0.75
thing by giving an example, such as using
the metric and the customary system to 75 3
describe the temperature. Similarly, you can 100 4
ask them about the weather it's cold, it's
freezing, it's frigid, it's chilly to show that 75 : 100 75 to 100
there are different ways to share the same
idea. 32 % 0.32

Have students fill in the boxes showing the 32 8
colored squares for the six different methods. 100 25

32 : 100 32 to 100

Have students divide the class into different 25 % 0.25
groups to express ratios. Ask them questions
to get information about the students. 25 1
What percentage wears glasses? 100 4
Ratio of girls to boys?
Long hair to short hair? 25 : 100 25 to 100
Birthdays in the first half or the second half
of the year? A percent is the ratio of a number
to 100. It is shown with the symbol, %.

Percent means per hundred .

120

2. Build Understanding

A common way to express the idea of percentages is parts of a whole. Explain to students a “natural
progression” of parts to a percentage.

Different ways to show d34ividoef dsobmy e4thin17g050

3 3
4

75 0.75
100

0.75 100 75%

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