Proportional Word Problems

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Presentation transcript:

Proportional Word Problems TeacherTwins©2014

Warm Up no yes yes 9 12.5 5.5

Solving Word Problems with Proportions. Solving Word Problems with Proportions. Example 1: Jon made 34 cookies in 2 hours. How many cookies can he make in 13 hours? Put each ratio in a proportion. Make sure the measurements are in the same position in the proportion. In this proportion cookies are on top and hours are on bottom.

Example 2: Ryan can run 5 miles in 1.45 hours. How long will it take him to run 7 miles? 2.03 hours

86 jumps (rounded to nearest whole number.) Example 3: Gina can jump 70 times in 45 seconds. How many jumps will she make in 55 seconds? 86 jumps (rounded to nearest whole number.)

Practice 1). Greg uses 3 tbsp. of chocolate chips for 2 muffins. How many chocolate chips will he need for 5 muffins? 2). Larry walks 1.3 miles in 0.45 hour. How many miles will he walk in 1.5 hours? 3). Carrie can make 15 bracelets in 2 days. How many bracelets can she make in 1 week (7 days)? 4). Stephanie breaks on average, 1.5 pencils every school day. How many pencils can she expect to break in a week (5 days)? 7.5 tbsp. 4.3 miles 52.5 bracelets 7.5 pencils

Closure Kim lost 12 lbs. in 8 weeks. If she continues losing weight at this rate, about how much weight will she lose in 12 weeks? Explain how to solve this problem and find the solution. 18 pounds