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Glencoe Math: Course 2, Volume 1 View details

2. Compare and Order Rational Numbers

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Exercise 20 Page 277

Try to rewrite all of the values in the same form before ordering them.

{7.49, 7.5 %, 7 4950 }

Practice makes perfect

Let's approach ordering the given set from least to greatest one number at a time.

First Value

First, we have 7.49. It is in decimal form, we do not have to rewrite this number. We will rewrite the other numbers as decimals to order them. 7.49

Second Value

Next, we have 7 4950. Let's rewrite this number as a decimal.

7 4950

ExpandFrac

a/b=a * 2/b * 2

7 49* 250 * 2

Multiply

7 98100

WriteDec

Write as a decimal

7.98

Next, we can compare this number to 7.49. 7.49 < 7.98 ⇔ 7.49 < 7 4950

Third Value

Let's rewrite the third value, 7.5 %. Recall that we can rewrite percent as a decimal. Let's take a look.

7.5 %

WriteDec

Write as a decimal

7.5

In this form, we can compare this number to the other two. 7.49 < 7.5 < 7 4950 ⇕ 7.49 < 7.5 % < 7 4950

Combining the Numbers

Now, we can write the set in order from least to greatest. {7.49, 7.5 %, 7 4950 }

Subchapter links

Guided Practice p.274

Independent Practice p.275-276

H.O.T. Problems p.276

Standardized Test Practice p.276-278

Extra Practice p.277

Common Core Review p.278

Exercise 20 Page 277

Hints

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Practice exercises

Asses your skill

First Value

Second Value

Third Value

Combining the Numbers