Let's solve each question one by one and explain the reasoning behind the answers.
---
6. If you round off 3784587 to nearest hundred, you will get _______.
- To round to the
nearest hundred, look at the
tens digit.
- The number is
3,784,587
- The
hundreds place is
5 (in 587), and the
tens digit is
8.
- Since 8 ≥ 5, we
round up the hundreds digit from 5 to 6.
- So, 3,784,587 → 3,784,600
✔ Answer: C. 3784600
---
7. Successor of 1 million is _______
- 1 million = 1,000,000
- The
successor means the next number after it.
- So, 1,000,000 + 1 =
1,000,001
✔ Answer: D. 10000001
---
8. Number of zeroes in 60 million are _______
- 60 million = 60,000,000
- Count the zeros: 6 followed by
7 zeros
✔ Answer: C. 7
---
9. Place value of 3 in 11,38,970 is _______
- Let's write the number with Indian numbering system:
- 11,38,970 → 11 lakh 38 thousand 970
- Break it down:
- 10,00,000 → ten lakh
- 1,00,000 → one lakh
- 30,000 → thirty thousand
- The digit
3 is in the
ten thousands place → so its place value is
30,000
- But let’s check options:
A. Ten thousand → 10,000
B. Lakh → 100,000
C. Ten lakh → 1,000,000
D. Thousand → 1,000
But
3 is in the
ten thousands place →
3 × 10,000 = 30,000
Wait — but
option A says "Ten thousand", which is a
place value name.
So the
place value of 3 is
30,000, but the
name of the place is
ten thousand.
So the
correct choice is
A. Ten thousand
✔ Answer: A. Ten thousand
> Note: This is asking for the
place value in terms of the
name, not the actual numerical value.
---
10. 10 lakh is equal to _______
- 1 lakh = 100,000
- So 10 lakh = 10 × 100,000 =
1,000,000
Now check options:
A. One million → 1,000,000
✔
B. Ten million → 10,000,000
✘
C. Hundred thousands → 100,000
✘
D. One billion → 1,000,000,000
✘
✔ Answer: A. One million
---
11. One billion has _______ number of zeroes.
- One billion = 1,000,000,000
- Count the zeros: 9 zeros
✔ Answer: C. 9
---
12. MM stands for _______
- In Roman numerals:
- M = 1000
- MM = 1000 + 1000 =
2000
✔ Answer: B. 2000
---
✔ Final Answers:
6.
C. 3784600
7.
D. 10000001
8.
C. 7
9.
A. Ten thousand
10.
A. One million
11.
C. 9
12.
B. 2000
Let me know if you'd like a visual explanation or any clarification!
Parent Tip: Review the logic above to help your child master the concept of 5th grade math olympiad worksheet.
