Rounding Off Estimations
ICSE · Class 5 · Mathematics
Flashcards for Rounding Off Estimations — ICSE Class 5 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.
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Round off 47 to the nearest ten.
Answer
Step 1: Look at the ones digit — it is 7. Step 2: Since 7 ≥ 5, we round up. Step 3: 47 becomes 50. Answer: 50…
Round off 82 to the nearest ten.
Answer
Step 1: Look at the ones digit — it is 2. Step 2: Since 2 < 5, we round down. Step 3: 82 becomes 80. Answer: 80…
Round off 367 to the nearest hundred.
Answer
Step 1: Look at the tens digit — it is 6. Step 2: Since 6 ≥ 5, we round up. Step 3: 367 becomes 400. Answer: 400…
Round off 542 to the nearest hundred.
Answer
Step 1: Look at the tens digit — it is 4. Step 2: Since 4 < 5, we round down. Step 3: 542 becomes 500. Answer: 500…
Round off 2,738 to the nearest thousand.
Answer
Step 1: Look at the hundreds digit — it is 7. Step 2: Since 7 ≥ 5, we round up. Step 3: 2,738 becomes 3,000. Answer: 3,000…
Round off 4,321 to the nearest thousand.
Answer
Step 1: Look at the hundreds digit — it is 3. Step 2: Since 3 < 5, we round down. Step 3: 4,321 becomes 4,000. Answer: 4,000…
Estimate the sum: 348 + 567 (round to nearest hundred).
Answer
Step 1: Round 348 → 300 (4 < 5) Step 2: Round 567 → 600 (6 ≥ 5) Step 3: Add: 300 + 600 = 900 Estimated sum: 900…
Estimate the difference: 823 – 476 (round to nearest hundred).
Answer
Step 1: Round 823 → 800 (2 < 5) Step 2: Round 476 → 500 (7 ≥ 5) Step 3: Subtract: 800 – 500 = 300 Estimated difference: 300…
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