📘 Class 6 Maths – Chapter 1.7 Worksheet: Estimation (50 Questions)

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🔹 Section A: Round and Estimate (1–10)

Round each number to nearest 1000 and then estimate the sum:

  1. 4,876 + 2,143 ≈ __________
  2. 7,654 + 3,221 ≈ __________
  3. 6,789 + 1,234 ≈ __________
  4. 9,876 + 2,345 ≈ __________
  5. 5,432 + 4,567 ≈ __________
  6. 3,789 + 6,111 ≈ __________
  7. 8,234 + 2,876 ≈ __________
  8. 7,890 + 1,210 ≈ __________
  9. 6,543 + 3,456 ≈ __________
  10. 2,999 + 5,001 ≈ __________

🔹 Section B: Estimate Differences (11–20)

Round to nearest 1000 and estimate:

  1. 8,765 – 2,432 ≈ __________
  2. 7,654 – 3,221 ≈ __________
  3. 9,876 – 4,345 ≈ __________
  4. 6,789 – 2,234 ≈ __________
  5. 5,432 – 1,567 ≈ __________
  6. 3,789 – 1,111 ≈ __________
  7. 8,234 – 3,876 ≈ __________
  8. 7,890 – 2,210 ≈ __________
  9. 6,543 – 3,456 ≈ __________
  10. 9,999 – 5,001 ≈ __________

🔹 Section C: Estimate (Nearest 10,000) (21–30)

  1. 47,832 + 12,345 ≈ __________
  2. 83,219 + 25,555 ≈ __________
  3. 64,999 + 11,111 ≈ __________
  4. 78,560 + 21,450 ≈ __________
  5. 59,999 + 30,001 ≈ __________
  6. 33,450 + 15,550 ≈ __________
  7. 86,500 + 13,400 ≈ __________
  8. 45,678 + 22,345 ≈ __________
  9. 72,345 + 17,655 ≈ __________
  10. 91,234 + 18,766 ≈ __________

🔹 Section D: Word Problems (31–40)

  1. A shop sold items worth ₹4,876 and ₹2,143. Estimate total sale.
  2. A farmer harvested 7,654 kg and 3,221 kg crops. Estimate total.
  3. A school collected ₹6,789 and ₹1,234 donations. Estimate total.
  4. A company earned ₹9,876 and ₹2,345. Estimate total earnings.
  5. A student read 5,432 and 4,567 pages (two books). Estimate total pages.
  6. A library had 8,765 books and lost 2,432. Estimate remaining.
  7. A city population increased from 7,654 to 10,875. Estimate increase.
  8. A tank had 9,876 litres, used 4,345 litres. Estimate remaining.
  9. A factory made 6,789 items, sold 2,234. Estimate remaining.
  10. A shop had 5,432 items, sold 1,567. Estimate items left.

🔹 Section E: Mixed Estimation (41–50)

  1. 4,876 + 2,143 – 1,234 ≈ __________
  2. 7,654 + 3,221 – 2,111 ≈ __________
  3. 6,789 + 1,234 – 3,456 ≈ __________
  4. 9,876 + 2,345 – 4,321 ≈ __________
  5. 5,432 + 4,567 – 2,999 ≈ __________
  6. 8,765 – 2,432 + 1,234 ≈ __________
  7. 7,654 – 3,221 + 2,111 ≈ __________
  8. 9,876 – 4,345 + 3,222 ≈ __________
  9. 6,789 – 2,234 + 1,111 ≈ __________
  10. 5,432 – 1,567 + 2,222 ≈ __________

✅ Answer Key

Section A

  1. 7,000
  2. 11,000
  3. 8,000
  4. 12,000
  5. 10,000
  6. 10,000
  7. 11,000
  8. 9,000
  9. 10,000
  10. 8,000

Section B

  1. 6,000
  2. 5,000
  3. 6,000
  4. 5,000
  5. 4,000
  6. 3,000
  7. 4,000
  8. 6,000
  9. 3,000
  10. 5,000

Section C

  1. 60,000
  2. 1,10,000
  3. 80,000
  4. 1,00,000
  5. 90,000
  6. 50,000
  7. 1,00,000
  8. 70,000
  9. 90,000
  10. 1,10,000

Section D (Approx answers)

  1. 7,000
  2. 11,000
  3. 8,000
  4. 12,000
  5. 10,000
  6. 6,000
  7. 3,000
  8. 6,000
  9. 5,000
  10. 4,000

Section E

  1. 6,000
  2. 9,000
  3. 5,000
  4. 8,000
  5. 7,000
  6. 8,000
  7. 7,000
  8. 9,000
  9. 6,000
  10. 6,000
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