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Glencoe Math: Course 2, Volume 1

GM

Glencoe Math: Course 2, Volume 1 View details

2. Percent and Estimation

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Exercise 13 Page 116

Round each number and multiply.

About 6

Practice makes perfect

We want to estimate 67 % of 8.7. Let's start by rounding each number. Notice that 66 % is equal to 0.66, which is very close to 23. rcl 67 % & ≈ & 2/3 [0.8em] 8.7 & ≈ & 9 Now we multiply 23 by 9 to get an estimation.

2/3 * 9

a=a/1

2/3 * 9/1

Multiply fractions

2* 9/3* 1

Multiply

18/3

Calculate quotient

6

We found that 67 % of 8.7 is about 6.

Subchapter links

Guided Practice p.114

Independent Practice p.115-116

H.O.T. Problems p.116

Standardized Test Practice p.116-118

Extra Practice p.117

Common Core Review p.118