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Glencoe Math: Course 2, Volume 1

GM

Glencoe Math: Course 2, Volume 1 View details

2. Compare and Order Rational Numbers

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Exercise 21 Page 277

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

{-1.4, -1.25, -1 125 }

Practice makes perfect

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

First Value

First, we have -1.4. It is in decimal form, we do not have to rewrite this number. We will rewrite the other numbers as decimals to order them. -1.4

Second Value

Next, we have -1 125. Let's rewrite this number as a decimal.

-1 125

a/b=a * 4/b * 4

-1 1* 425 * 4

Multiply

-1 4100

Write as a decimal

-1.04

Next, we can compare this number to -1.4. -1.4 < -1.04 ⇔ -1.4 < -1 125

Third Value

Let's focus on the third number, -1.25. In this form, we can compare this number to the other two. -1.4 < -1.25 < -1.04 ⇕ -1.4 < -1.25 < -1 125

Combining the Numbers

Now, we can write the set in order from least to greatest. {-1.4, -1.25, -1 125 }

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