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Big Ideas Math: Modeling Real Life, Grade 6

BI

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

Cross out common factors

13km* 0.62mi/1km

Simplify quotient

13* 0.62mi/1

a/1=a

13* 0.62mi

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

Subchapter links

Try It p.142-144

Self-Assessment for Concepts & Skills p.144

Self-Assessment for Problem Solving p.145

Review & Refresh p.146

Concepts, Skills, & Problem Solving p.146-148