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Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
1. Solving Equations Using Addition or Subtraction
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Exercise 5 Page 131

When multiplying real numbers, the product will be positive if the signs are the same and it will be negative if the signs are different.

- 56

Practice makes perfect

When multiplying real numbers, the product will be positive if the signs are the same and it will be negative if the signs are different. cc Same Sign & Different Signs (+)(+)=(+) & (+)(-)=(-) (-)(-)=(+) & (-)(+)=(-)In our case one number is negative and one number is positive, so the product will be negative.

- 7 * 8
MultNegPos

(- a)b = - ab

- 56

We can verify this using a calculator.

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arrow_right Try It p.128-129
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Try It 2 (Page 128)
Try It 3 (Page 128)
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arrow_right Self-Assessment for Concept & Skills p.129
Self-Assessment for Concept & Skills 5 (Page 129)
Self-Assessment for Concept & Skills 6 (Page 129)
Self-Assessment for Concept & Skills 7 (Page 129)
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arrow_right Self-Assessment for Problem Solving p.130
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arrow_right Review & Refresh p.131
Review & Refresh 1 (Page 131)
Review & Refresh 2 (Page 131)
Review & Refresh 3 (Page 131)
Review & Refresh 4 (Page 131)
Review & Refresh 5 (Page 131)
Review & Refresh 6 (Page 131)
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Review & Refresh 8 (Page 131)
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arrow_right Concept, Skills, & Problem Solving p.131-132
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Concept, Skills, & Problem Solving 11 (Page 131)
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Concept, Skills, & Problem Solving 45 (Page 132)
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