This Grade 5 estimation worksheet focuses on rounding decimals to the nearest tenth and hundredth, plus estimating money totals and change at the store. Students practice spotting the next-place digit, deciding when to round up, and using whole-dollar rounding for fast shopping math problems. Short-answer items push Grade 5 learners to explain their rounding choices in clear, complete sentences for stronger reasoning skills.
Style:
Estimation Strategies
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
Round 2.367 to the nearest tenth: 2.3 because we drop the rest.
Rewrite: Round 2.367 to the nearest tenth: 2.4 because the hundredths digit is 6.
2. Fix the sentence:
Round $4.78 to the nearest dollar: $4 because we keep the whole part.
Rewrite: Round $4.78 to the nearest dollar: $5 because $.78 is closer to one dollar.
3. Fix the sentence:
Estimate $3.49 plus $2.51 by rounding to $3 and $2 to get $5.
Rewrite: Estimate $3.49 plus $2.51 by rounding to $3 and $3 to get $6.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. Round 5.482 to the nearest tenth to get 5.5.
2. Round 7.234 to the nearest hundredth to get 7.23.
3. Estimate $6.89 plus $2.10 by rounding to whole dollars to get $9.
4. If a snack costs $3.78 and you pay with $5, estimated change is about $1.
Part C: Short Answer
Answer each question in one or two complete sentences.
1. Explain how to round 9.456 to the nearest hundredth in Grade 5.
Look at the thousandths digit, which is 6. Because 6 is 5 or greater, round the hundredths digit up from 5 to 6, giving 9.46.
2. Why is rounding to the nearest dollar useful when estimating a grocery total?
Rounding to whole dollars makes mental math fast and gives a close total. Shoppers can quickly check if they have enough money before reaching the register.
Estimation Strategies
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
Round 2.367 to the nearest tenth: 2.3 because we drop the rest.
Rewrite: Round 2.367 to the nearest tenth: 2.4 because the hundredths digit is 6.
2) Fix the sentence:
Round $4.78 to the nearest dollar: $4 because we keep the whole part.
Rewrite: Round $4.78 to the nearest dollar: $5 because $.78 is closer to one dollar.
3) Fix the sentence:
Estimate $3.49 plus $2.51 by rounding to $3 and $2 to get $5.
Rewrite: Estimate $3.49 plus $2.51 by rounding to $3 and $3 to get $6.
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) Round 5.482 to the nearest tenth to get 5.5.
2) Round 7.234 to the nearest hundredth to get 7.23.
3) Estimate $6.89 plus $2.10 by rounding to whole dollars to get $9.
4) If a snack costs $3.78 and you pay with $5, estimated change is about $1.
★ Part C: Short Answer
Answer each question in one or two complete sentences.
1) Explain how to round 9.456 to the nearest hundredth in Grade 5.
Look at the thousandths digit, which is 6. Because 6 is 5 or greater, round the hundredths digit up from 5 to 6, giving 9.46.
2) Why is rounding to the nearest dollar useful when estimating a grocery total?
Rounding to whole dollars makes mental math fast and gives a close total. Shoppers can quickly check if they have enough money before reaching the register.
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9 Questions
15-20 minutes
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