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Reteach and Skills Practice Workbook

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7–2<br />

Name<br />

<strong>Skills</strong> <strong>Practice</strong><br />

Date<br />

Problem–Solving Skill: Reasonable Answers<br />

Decide whether each answer is reasonable. Explain your reasoning.<br />

1. Jill is in charge of the school fair that will go on for a week.<br />

There will be 10 different volunteers helping each day. Is 70<br />

a reasonable estimate of the number of people who are expected<br />

to volunteer?<br />

4MR3.1, 4NS3.0<br />

Chapter Resources<br />

2. Jill will have to walk home from the fair each day for the week. The<br />

fair is 1 mile from her home. Is it reasonable to say that she will walk<br />

more than 10 miles before the week is over?<br />

3. Jill expects that the sale of donated soda will bring in about $50<br />

a day for the week. Is it reasonable for her to expect at least $500<br />

from soda sales by the end of the week?<br />

Copyright © Macmillan/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.<br />

4. Jill was able to collect donations of about $60 a month for the<br />

10 months that she was planning the fair. She saved all of the<br />

money. In addition, she was given $350 that had been put aside<br />

from the previous fair. She needs $1,000 to rent a ferris wheel.<br />

Is it reasonable to say that she can pay for the ferris wheel rental<br />

in full?<br />

Types of Prizes<br />

Number Collected<br />

stuffed animals 98<br />

plastic models 54<br />

yo-yos 96<br />

stopwatches 49<br />

5. The table above shows the numbers of different prizes Jill<br />

collected for the fair. Is it reasonable for her to say that she has<br />

close to 300 prizes to give to those who win games?<br />

6. Jill has spent a total of 6,000 minutes organizing the fair. Is it<br />

reasonable for her to claim that she organized the fair in under<br />

10 hours?<br />

Grade 4 119 Chapter 7

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