CBSE Class 7 Maths Large Numbers Around Us (Class 7 NCERT New) Quiz 13

1. Systematic Sippy is a calculator with buttons +1, +10, +100, +1,000, +10,000, +1,00,000 that should be used as few times as possible. What is the smallest number of button clicks needed to make 5072, and which expression achieves it?

A 14 clicks: (5×1,000)+(7×10)+(2×1) B 18 clicks: (50×100)+(7×10)+(2×1) C 23 clicks: (3×1,000)+(20×100)+(72×1) D 12 clicks: (4×1,000)+(10×10)+(72×1)

2. Systematic Sippy: What is the smallest number of button clicks needed to make 8300, and which expression achieves it?

A 11 clicks: (8×1,000)+(3×100) B 13 clicks: (83×100) C 8 clicks: (83×10)+(0×1) D 12 clicks: (8×1,000)+(30×10)

3. Systematic Sippy shows one way to get 5072 in 23 clicks. Which of the following uses fewer than 23 clicks and still makes 5072?

A (5×1,000)+(7×10)+(2×1) B (2×1,000)+(30×100)+(7×10)+(2×1) C (50×100)+(7×10)+(2×1) D (507×10)+(2×1)

4. If the +10,00,000 button is pressed ten times, which number results and how many zeroes does it have?

A Ten lakh; five zeroes B One crore; seven zeroes C Ten crore; eight zeroes D One billion; nine zeroes

5. How many zeroes does a thousand lakh have?

A 6 B 7 C 8 D 9

6. How many zeroes does a hundred thousand have?

A 4 B 5 C 6 D 7

7. In the Indian system, what is the number name for 4050678 written with commas as 40,50,678?

A Forty lakh fifty thousand six hundred seventy-eight B Four million fifty thousand six hundred seventy-eight C Four crore five lakh six thousand seventy-eight D Forty lakh five thousand sixty-seven

8. In the Indian system, what is the number name for 48121620 written with commas as 4,81,21,620?

A Four crore eighty-one lakh twenty-one thousand six hundred twenty B Forty-eight crore twelve lakh sixteen thousand twenty C Four million eight hundred twelve thousand one hundred sixty-two D Four crore eighty-one thousand twenty-one six hundred twenty

9. In the Indian system, what is the number name for 20022002 written with commas as 2,00,22,002?

A Two crore twenty-two thousand two B Two crore two lakh twenty-two thousand two C Twenty crore two lakh two D Two million twenty-two thousand two

10. In the Indian system, what is the number name for 246813579 written with commas as 24,68,13,579?

A Twenty-four crore sixty-eight lakh thirteen thousand five hundred seventy-nine B Two hundred forty-six crore eighty-one lakh three thousand five hundred seventy-nine C Twenty-four million sixty-eight thousand thirteen hundred seventy-nine D Twenty-four crore sixty-eight thousand one hundred three seventy-nine