IXL | Multi-step word problems: identify reasonable answers

A baker made 9 trays of cupcakes and 2 pans of brownies. Each cupcake tray makes 12 cupcakes, and each brownie pan makes 48 brownies. The baker estimates he made about 200 desserts in all. Is that a good estimate?

Yes.

No, it is much too high.

No, it is much too low.

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Learn with an example

question

Reggie decides to buy a 2-pack of almond butter. He notices that each jar in the pack has 84 servings, and each serving has 20 milligrams of sodium. He estimates that the 2-pack has a total of about 320 milligrams of sodium. Does that sound about right?

Yes.

No, it is much too high.

No, it is much too low.

solution

To check the estimate, find about how many milligrams of sodium the 2-pack has in total. Use numbers that are easy to work with and that are close to the numbers in the problem.

Each jar of almond butter has 84 servings. That is about 80 servings. Multiply by 20 to estimate the number of milligrams of sodium in one jar.

1,600

Reggie bought a 2-pack. Multiply by 2 to estimate the total number of milligrams of sodium.

1,600

3,200

The 2-pack has a total of about 3,200 milligrams of sodium. An estimate of 320 is much too low.

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Teacher tools

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Not feeling ready yet? These can help:

I.4Multi-step word problems

B.2Estimate sums and differences: word problems

D.6Estimate products: word problems

E.5Estimate quotients

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