Lesson 7 10 Multistep Fraction Number Stories Overview

Lesson 7 -10 Multistep Fraction Number Stories Overview: Students solve multistep number stories involving fractions.

Math Meeting

Math Meeting cont’d 1. How many 2. How many 3. How many 4. How many minutes in an hour? seconds in an hour? minutes in two (2) hours? seconds in two (2) hours?

Math Meeting cont’d 1 kilogram = 1, 000 grams

Math Message Look at the table on journal page 256. What is the fastest way to burn 100 calories? How long would it take, in minutes, to burn 100 calories doing this activity? In seconds? Hint/Clue – Look for fractions with large denominators and small numerators.

Math Message – Follow-Up

2 nd Number Story What is the slowest way to burn 100 calories? How long would it take, in minutes, to burn 100 calories? In seconds? Hint/Clue – Look for fractions with the large numbers. Start with those with whole numbers then choose the fraction that is the largest.

Follow-Up – 2 nd Number Story

3 rd Number Story What is the faster way to burn 100 calories: playing catch with a football or singing? Compare the two fractions. How can you use the symbol >, =, or < to record your result?

Follow-Up – 3 rd Number Story

4 th Number Story Which is the slower way to burn 100 calories: ice skating or shoveling snow? Compare the two fractions. How can you use the symbol >, =, or < to record your result?

Follow-Up – 4 th Number Story

5 th Number Story How would you order chewing gum, raking leaves, and washing dishes from the fastest to the slowest way to burn 100 calories? Compare How the fractions. could you use the symbols >, =, or < to record your result?

Follow-Up – 5 th Number Story

In this lesson you will use what you know about fraction comparisons, fraction operations, and equivalent intervals of time to solve multistep number stories.

In partners, work on math journal pages 256 – 257. 20 minutes

To help prepare you for solving multistep fraction number stories on journal page 256 -257, let’s discuss strategies for solving problems like the following: If I burned 200 calories running stairs, how many hours or what fraction of an hour did I run? 2. If I burned 400 calories raking leaves, how many hours or what fraction of an hour did I rake? 3. If I burned 600 calories while sitting, how many hours or what fraction of an hour did I sit? 1.

Summarize Bowling burns about 100 calories in ½ hour. If I bowled for exactly 1 hour, about how many calories would I burn?