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Big Ideas Math: Modeling Real Life, Grade 7
BI
Big Ideas Math: Modeling Real Life, Grade 7 View details
4. Percents of Increase and Decrease
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Exercise 1 Page 257

First write the percent as a decimal number.

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Practice makes perfect

To find the percent of a number, we first write the percent as a decimal number. To do so, we ignore the percent symbol and move the decimal point two places to the left.

Percent as decimal

Now we multiply the decimal by the whole number of which we want to find the percent.

0.25 * 64
WriteAsFrac

Write as a fraction

25/100 * 64
MoveRightFacToNum

a/c* b = a* b/c

25 * 64/100
Multiply

Multiply

1600/100
CalcQuot

Calculate quotient

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arrow_right Try It p.254-255
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Try It 2 (Page 254)
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arrow_right Self-Assessment for Concept & Skills p.255
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Self-Assessment for Concept & Skills 6 (Page 255)
Self-Assessment for Concept & Skills 7 (Page 255)
arrow_right Self-Assessment for Problem Solving p.256
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arrow_right Review & Refresh p.257
Review & Refresh 1 (Page 257)
Review & Refresh 2 (Page 257)
Review & Refresh 3 (Page 257)
Review & Refresh 4 (Page 257)
Review & Refresh 5 (Page 257)
Review & Refresh 6 (Page 257)
Review & Refresh 7 (Page 257)
arrow_right Concept, Skills, & Problem Solving p.257-258
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Concept, Skills, & Problem Solving 9 (Page 257)
Concept, Skills, & Problem Solving 10 (Page 257)
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Concept, Skills, & Problem Solving 16 (Page 257)
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Concept, Skills, & Problem Solving 24 (Page 258)
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