📘 Class 6 Maths – Chapter 1, Worksheet: Knowing Our Numbers (50+ Questions)

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🔹 Section A: Fill in the Blanks (1–10)

  1. The smallest 7-digit number is __________.
  2. The greatest 6-digit number is __________.
  3. 1 lakh = __________ thousand.
  4. 1 crore = __________ lakh.
  5. The predecessor of 1,00,000 is __________.
  6. The successor of 9,99,999 is __________.
  7. 10 lakh = __________ crore.
  8. 1 million = __________ lakh.
  9. The smallest 5-digit number is __________.
  10. The greatest 4-digit number is __________.

🔹 Section B: Number Names (11–18)

Write in words (Indian System):

  1. 6,78,945 = __________________________
  2. 4,00,070 = __________________________
  3. 9,09,009 = __________________________
  4. 2,34,56,789 = _______________________

Write in words (International System):

  1. 3,456,789 = _________________________
  2. 7,080,050 = _________________________
  3. 10,005,010 = ________________________
  4. 9,999,999 = _________________________

🔹 Section C: Write in Figures (19–26)

  1. Five lakh forty thousand six = __________
  2. Eight crore ten lakh five thousand two = __________
  3. Nine lakh nine thousand nine = __________
  4. Two crore three lakh four thousand five = __________
  5. Seven million forty thousand six = __________
  6. Nine million nine hundred nine thousand nine = __________
  7. Ten lakh ten thousand ten = __________
  8. One crore one lakh one thousand one = __________

🔹 Section D: Place Value & Face Value (27–34)

  1. Place value of 7 in 5,47,890 = __________
  2. Face value of 3 in 8,23,456 = __________
  3. Place value of 9 in 9,01,234 = __________
  4. Face value of 0 in 4,05,678 = __________
  5. Write expanded form of 7,05,306
  6. Write expanded form of 3,40,009
  7. Write number from expanded form:
    6,00,000 + 50,000 + 8,000 + 400 + 20 + 1
  8. Write number from expanded form:
    2,00,00,000 + 30,00,000 + 4,00,000 + 5,000 + 60

🔹 Section E: Compare the Numbers (35–40)

Fill >, < or =

  1. 7,65,890 ___ 7,56,890
  2. 9,00,000 ___ 8,99,999
  3. 5,43,210 ___ 5,43,210
  4. 6,78,901 ___ 6,87,109
  5. 3,45,678 ___ 3,54,678
  6. 8,09,999 ___ 8,90,000

🔹 Section F: Arrange in Order (41–44)

  1. Ascending order:
    6,78,900; 6,70,900; 6,87,900; 6,07,900
  2. Descending order:
    9,87,654; 9,78,654; 9,76,854; 9,98,654
  3. Ascending order:
    5,05,050; 5,50,500; 5,00,505; 5,55,000
  4. Descending order:
    7,77,777; 7,07,707; 7,70,770; 7,07,770

🔹 Section G: Rounding Off (45–48)

  1. Round 4,78,912 to nearest thousand
  2. Round 6,45,678 to nearest ten thousand
  3. Round 9,99,499 to nearest thousand
  4. Round 3,50,501 to nearest lakh

🔹 Section H: Estimation (49–52)

  1. Estimate: 4,876 + 2,143
  2. Estimate: 7,999 + 1,002
  3. Estimate: 6,432 – 2,189
  4. Estimate: 9,876 – 3,222

🔹 Section I: Short Answer (53–58)

  1. What is place value?
  2. What is face value?
  3. Write the number 1 more than 9,99,999
  4. Write the number 1 less than 1,00,000
  5. How many zeros are there in 1 crore?
  6. Which is greater: 1 million or 10 lakh?

✅ Answer Key

Section A

  1. 10,00,000
  2. 9,99,999
  3. 100
  4. 100
  5. 99,999
  6. 10,00,000
  7. 0.1
  8. 10
  9. 10,000
  10. 9,999

Section B

  1. Six lakh seventy-eight thousand nine hundred forty-five
  2. Four lakh seventy
  3. Nine lakh nine thousand nine
  4. Two crore thirty-four lakh fifty-six thousand seven hundred eighty-nine
  5. Three million four hundred fifty-six thousand seven hundred eighty-nine
  6. Seven million eighty thousand fifty
  7. Ten million five thousand ten
  8. Nine million nine hundred ninety-nine thousand nine hundred ninety-nine

Section C

  1. 5,40,006
  2. 8,10,05,002
  3. 9,09,009
  4. 2,03,04,005
  5. 7,040,006
  6. 9,909,009
  7. 10,10,010
  8. 1,01,01,001

Section D

  1. 7,000
  2. 3
  3. 9,00,000
  4. 0
  5. 7,00,000 + 5,000 + 300 + 6
  6. 3,00,000 + 40,000 + 9
  7. 6,58,421
  8. 2,34,05,060

Section E

  3. =
  4. <
  5. <
  6. <

Section F

  1. 6,07,900; 6,70,900; 6,78,900; 6,87,900
  2. 9,98,654; 9,87,654; 9,78,654; 9,76,854
  3. 5,00,505; 5,05,050; 5,50,500; 5,55,000
  4. 7,77,777; 7,70,770; 7,07,770; 7,07,707

Section G

  1. 4,79,000
  2. 6,50,000
  3. 9,99,000
  4. 4,00,000

Section H

  1. 7,000
  2. 9,000
  3. 4,000
  4. 7,000

Section I

  1. Value of digit based on position
  2. Actual value of digit
  3. 10,00,000
  4. 99,999
  5. 7
  6. Equal
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