# Knowing Our Numbers – Class 6

**IMPORTANT QUESTIONS FOR CBSE CLASS 6 MATHEMATICS**

**Knowing Our Numbers – Chapter 1**

**Answer the following:-**

**1. Write the number name of 8,88,88,888.**

**2. Write the number in figures: Thirteen lakh three thousand thirty three.**

**3. Write the place value and face value of 6 in the number 54, 67,879.**

**4. Write the expanded form of the number: 89, 60,754.**

**5. Write the standard form of: 30, 00,000 + 6,000 + 800 + 30 + 1**

**6. Put commas correctly and write the number name in International System of Numeration: 9876435.**

**7. Write the number in figures according to International System of Numeration: Five million eight hundred three thousand one hundred forty.**

**8. Use the digits without repetition to form the greatest 7-digit number:**

**9,0,4,3,6,8,2.**

**9. Use the digits with repetition to form the smallest 7 digit number: **

**1,0,7,9 4, 3.**

**10. Round off to the nearest ten, hundred and thousand of 87654.**

**11. Write the Roman numeral for **

**a) 654**

**b) 42**

**12. Write the Hindu-Arabic numerals for **

**a) CXX**

**b) XCIV**

**13. Estimate: 568 + 785 (Round off to nearest hundred)**

**14. Make the greatest 4 digit number with condition 5 is always at tens place.**

**15. Make the smallest 4 digit number with condition 6 is always at hundreds place.**

**ANSWERS:**

**1. Eight crore eighty eight lakh eighty eight thousand eight hundred eighty eight.**

**2. 13, 03,033**

**3. Place value of 6 is 60,000 and face value is 6 itself.**

**4. 8 x 10, 00,000 + 9 x 1, 00,000 + 6 x 10,000 +7 x 100 + 5 x 10 + 4 x 1.**

**5. 30, 06,831**

**6. 9,876,435**

**Number name: Nine million eight hundred seventy six thousand four hundred thirty five.**

**7. 5,803,140**

**8. 9864320**

**9. 1003479**

**10. 87654**

**Nearest ten = 87650**

**Nearest hundred = 87700**

**Nearest thousand = 88000**

**11. a) 654 = DCLIV**

**b) 42 = XLII**

**12. a) CXX = 120**

**b) XCIV = 94**

**13. 568 rounds off to 600.**

**785 rounds off to 800.**

**Estimated sum = 600 + 800 = 1400.**

**14. 9857**

**15. 1602.**