SOLUTION: Clyde and Leah want to combine their money. They have no paper, pencils, or calculators, so they solve the problem mentally by rounding. Clyde has $2.68 and Leah has $3.49. Clyde r

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Question 991988: Clyde and Leah want to combine their money. They have no paper, pencils, or calculators, so they solve the problem mentally by rounding. Clyde has $2.68 and Leah has $3.49. Clyde rounds both amounts to the nearest dollar and then adds them. Leah rounds the amounts to the nearest ten cents and adds them. Which rounding attempt most accurately describes their combined total?
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


First thing to do is to answer this: What is your intuitive sense of what the answer should be?

Step 1: Round 2.68 to the nearest whole number. Round 3.49 to the nearest whole number. Add the two whole numbers.

Step 2: Round 2.68 to the nearest tenth. Round 3.49 to the nearest tenth. Add these two numbers.

Step 3: Add 2.68 to 3.49. Which answer from the first two steps above is closer to the sum of the actual numbers?

John

My calculator said it, I believe it, that settles it