Rounding to tens
Mrs. Getz has 78 spiral notebooks. About how many spiral notebooks does she have?
What is 80 spiral notebooks.
Mrs. Powers has 54 Junie B. Jones books in her classroom. About how many Junie B. Jones books does she have?
What is 50
Round 218 to the nearest ten.
What is 220.
Ms. Kesselman has 26 red pencils and 38 green pencils. About how many pencils does she have altogether?
About 70 pencils.
Round 855 to the nearest ten
What is 860
Mrs. Swan has 313 fiction books in her classroom and 292 non-fiction books in her classroom. About how many books does she have in all?
About 600 books.
When Ms. Kesselman rounds 475 to the nearest hundred she gets 400. When Ms. Getz rounds 475 to the nearest hundred she gets 500. Who is correct? How do you know?
Ms. Getz is correct because 475 is closer to 500 than 400 on a number line.
Round 899 to the nearest ten
What is 900
Mrs. Burch has 245 girls at Ardmore and 278 boys at Ardmore. About how many students does she have altogether at Ardmore? (Round to the nearest ten).
About 530 students.
Mrs. Powers rounds 621 to the nearest hundred and gets 600. Ms. Green rounds 621 to the nearest hundred and gets 700. Who is correct? How do you know?
Mrs. Powers is correct because 621 is closer to 600 than 700 on a number line.