Name:_________ Date:___________


Writing to explain


  1. Write to explain how your round 59 to the nearest ten.






  2. Write to explain how your round 237 to the nearest hundred.






  3. How would you use a number line to round 239 to the nearest ten.






  4. Alan says 358 rounds to 400. Amanda says 358 rounds to 360. Who is correct? Write to explain.






  5. Reasoning. Mom bought 12 pounds of rice. Can you say that Mom buy 20 pounds of rice? Write to explain.







Answer key

  1. Write to explain how your round 59 to the nearest ten.

    9 is in the ones place. Round to the next greater ten. 60



  2. Write to explain how your round 237 to the nearest hundred.

    3 is in the tens place and 3 is less than 5. can not round to the next greater hundred. 200



  3. How would you use a number line to round 239 to the nearest ten.

    239 on the number line is close to 240 than 230. Round 239 to 240.



  4. Alan says 358 rounds to 400. Amanda says 358 rounds to 360. Who is correct? Write to explain.

    Both cound be correct. depends on rounding to nearest ten or nearest hundred.



  5. Reasoning. Mom bought 12 pounds of rice. Can you say that Mom buy 20 pounds of rice? Write to explain.

    No. The nearest ten is 10 instead of 20. Round 12 to 10.