Rounding

© Colleen Patton, 2012

http://pattonspatch.blogspot.com

Name

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Toys R Us ™ Project An 8 year-old child is moving to the United States to live with a new family. The new parents are very excited, but need to go to Toys R Us to purchase things for their new child. They are willing to spend up to $1,500 on his toys. Your job will be to determine what they should purchase for the child. Directions: 1. Familiarize yourself with the Toys R Us ™ website. (In the URL box of your browser, you can type in www.toysrus.com to view it.) 2. Decide what sections of the website you should look in to find the toys. 3. Start compiling a list of toys you think an 8 year-old child would want. 4. Find the toys from your list on the website. Be sure to record the actual price and the rounded price. 5. Find which toy costs the most and the least amount. Be sure to answer whether you rounded to the nearest 10 or 100 and why. 6. Determine the total amount of money the parents should bring to Toys R Us™. Be sure to use your rounded numbers. 7. Add up the items using the actual prices to determine the true total. 8. Look at the two totals and decide if it is a good idea for the parents to round the totals or not. Did the rounded total end up close enough to the actual total?

© Colleen Patton, 2012

http://pattonspatch.blogspot.com

Toys R Us™ Project Rubric List of toys with actual prices (10 pts) Rounded prices (20 pts) Greatest Cost Toy with Rounding Explanation (10 pts) Lowest Cost Toy with Rounding Explanation (10 pts) Rounded Total (15 pts) Actual Total (15 pts) Comparison of Two Totals (20 pts) Total (100 pts)

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Comments:

© Colleen Patton, 2012

http://pattonspatch.blogspot.com

Toys R Us™ Shopping List

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http://pattonspatch.blogspot.com

Toy Name

Actual Cost

© Colleen Patton, 2012

Rounded Cost

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Which toy costs the most? _________________________________________________ _________________________________________________ Did you round the cost to the nearest 10 or 100? Why? _________________________________________________ _________________________________________________ _________________________________________________

Which toy costs the least? _________________________________________________ _________________________________________________ Did you round the cost to the nearest 10 or 100? Why? _________________________________________________ _________________________________________________ _________________________________________________

© Colleen Patton, 2012

http://pattonspatch.blogspot.com

Use the rounded cost to figure out how much money the parents should bring to Toys R Us™. Show your thinking in the space below.

Rounded Total: __________________________

Use the actual cost to figure out how much all of the toys cost. Show your thinking in the space below.

Actual Total: ________________________________

© Colleen Patton, 2012

http://pattonspatch.blogspot.com

Look at the 2 totals your came up with for the toys. Think about whether or not it would be useful to round in this situation. Explain your thinking below.

© Colleen Patton, 2012

http://pattonspatch.blogspot.com

Thanks so much for downloading this freebie! After you use this in your classroom, let me know how it goes! You can leave a comment on my blog, my Facebook page, my email, and/or by rating this unit. Thanks! [email protected]

© Colleen Patton, 2012

http://pattonspatch.blogspot.com