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- Ana did not round 458,156 to the nearest hundred thousand. She rounded 458,156 in two other ways. She used these two number lines.
Using these two number lines, give two other ways to round 458,156.
- Use Ana's strategy and the second number line in Question 12 to round 407,997 to the nearest 10,000. Point to where 407,997 is on the number line.
- What benchmarks did you use?
- Jerome estimated the total number of people who visited the planetarium over the last two years as 900,000. Ana's estimate was 870,000 people.
- Write a number sentence to show how Jerome found his estimate.
- Write a number sentence to show how Ana found her estimate.
- Which student is correct?
- Use rounded numbers to estimate the increase in attendance from 2006 to 2007. Show or tell your strategy.
