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- Use the second number line in Question 3 to round 188 to the nearest 10.
- What benchmarks did you use?
- Grace estimated 300 for the total number of orbiting satellites launched by India and Japan.
Lee Yah's estimate was 330 satellites. - Write a number sentence to show how Grace found her estimate.
- Write a number sentence to show how Lee Yah found her estimate.
- Which student is correct?
- Use rounded numbers to estimate how many more orbiting satellites were launched by the
United States than China.
- Use the number lines below to round the number of satellites launched by Russia to the nearest thousand, hundred, and ten. Write the rounded numbers in the table below, and include the two benchmarks you used each time you rounded.
- Compare the rounded numbers in the table in the last column. Which one is closest to the exact number?
