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Big Ideas Math: Modeling Real Life, Grade 6
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Big Ideas Math: Modeling Real Life, Grade 6 View details
6. Converting Measures
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Exercise 39 Page 147

Use the conversion factor that 1 km is roughly equal to 0.62 mile.

8.06

Practice makes perfect

Let's start by writing the given statement. 13km/h& ≈ mi/h Converting between kilometers (km) and miles (mi) will involve using a conversion factor. 0.62mi/1km Multiplying 13km by this conversion factor will convert it to miles.

13km*0.62mi/1km
MoveLeftFacToNum

a*b/c= a* b/c

13km* 0.62mi/1km
CrossCommonFac

Cross out common factors

13km* 0.62mi/1km
SimpQuot

Simplify quotient

13* 0.62mi/1
DivByOne

a/1=a

13* 0.62mi
Multiply

Multiply

8.06mi

Because the time units are the same, they will remain the same. Then, 12 kilometers per hour is the same as approximately 8.06 mile per hour. To complete the given statement, we will substitute 8.06 into the blank space. 13km/h& ≈ 8.06mi/h

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arrow_right Try It p.142-144
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Try It 2 (Page 143)
Try It 3 (Page 144)
Try It 4 (Page 144)
arrow_right Self-Assessment for Concepts & Skills p.144
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Self-Assessment for Concepts & Skills 6 (Page 144)
Self-Assessment for Concepts & Skills 7 (Page 144)
arrow_right Self-Assessment for Problem Solving p.145
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arrow_right Review & Refresh p.146
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arrow_right Concepts, Skills, & Problem Solving p.146-148
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