Students round three-digit numbers to the nearest hundred. Part A corrects three sentences including a hundreds-rounding error and the rule for rounding when the tens digit is exactly 5. Part B has four fill-in-the-blank problems rounding 230, 678, and 450 to the nearest hundred. Part C has three true-or-false statements about which digit to inspect and results for 750 and 310.
Practicing hundreds rounding separately from tens rounding prevents digit-confusion errors.
Style:
Rounding to Nearest 10 and 100
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
340 rounded to the nearest hundred is 400.
Rewrite: 340 rounded to the nearest hundred is 300 because 4 is less than 5 so we round down.
2. Fix the sentence:
872 rounded to the nearest hundred is 800.
Rewrite: 872 rounded to the nearest hundred is 900 because 7 is 5 or greater so we round up.
3. Fix the sentence:
550 rounded to the nearest hundred is 500.
Rewrite: 550 rounded to the nearest hundred is 600 because when the tens digit is exactly 5 we round up.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. 230 rounded to the nearest hundred is 200.
2. 678 rounded to the nearest hundred is 700.
3. 450 rounded to the nearest hundred is 500.
4. 149 rounded to the nearest hundred is 100.
Part C: True or False?
Read each statement. Circle True or False.
1. When rounding to the nearest hundred, you look at the tens digit.
True False
2. 750 rounded to the nearest hundred is 700.
True False
3. 310 rounded to the nearest hundred is 300.
True False
Rounding to Nearest 10 and 100
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
340 rounded to the nearest hundred is 400.
Rewrite: 340 rounded to the nearest hundred is 300 because 4 is less than 5 so we round down.
2) Fix the sentence:
872 rounded to the nearest hundred is 800.
Rewrite: 872 rounded to the nearest hundred is 900 because 7 is 5 or greater so we round up.
3) Fix the sentence:
550 rounded to the nearest hundred is 500.
Rewrite: 550 rounded to the nearest hundred is 600 because when the tens digit is exactly 5 we round up.
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) 230 rounded to the nearest hundred is 200.
2) 678 rounded to the nearest hundred is 700.
3) 450 rounded to the nearest hundred is 500.
4) 149 rounded to the nearest hundred is 100.
★ Part C: True or False?
Read each statement. Circle True or False.
1) When rounding to the nearest hundred, you look at the tens digit.
True
False
2) 750 rounded to the nearest hundred is 700.
True
False
3) 310 rounded to the nearest hundred is 300.
True
False
Ready to Practice?
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10 Questions
15-20 minutes
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