Class 7 Maths Chapter 1: Large Numbers Around Us Important Questions by PW

Large numbers are used to represent populations, distances, money, data, and many other quantities in everyday life. However, reading numbers correctly, placing commas, converting between Indian and international systems, and performing calculations with large values can sometimes lead to mistakes. Questions may also require you to recognise patterns or use numbers efficiently rather than simply perform lengthy calculations.

The Class 7 Maths Chapter 1 Important Questions provide focused practice on Large Numbers Around Us. The set includes questions on place value, Indian and international number systems, number names, addition, multiplication, comparisons, nearest neighbours, and calculator-based number formation. Solving these questions can help you check your understanding, practise different question formats, and identify concepts that need further revision.

Class 7 Maths Chapter 1 Important Questions

Try solving the questions independently before checking the answers.

Important Questions with Answers

Section A – 1 Mark Each

Q1. The greatest 5-digit number using any one digit twice from the numbers 8, 1, 2, 3 is:

(A) 88321
(B) 88231
(C) 88122
(D) 83112

Answer: (A) 88321

Q2. How many zeros does a thousand lakh have?

(A) 5
(B) 7
(C) 8
(D) 9

Answer: (C) 8

Q3. The Tedious Tens only has a +10 button. How many times should it be pressed to show 180?

(A) 10
(B) 18
(C) 20
(D) 180

Answer: (B) 18

Q4. The Handy Hundreds only has a +100 button. How many times should it be pressed to show 4000?

(A) 40
(B) 4
(C) 400
(D) None of these

Answer: (A) 40

Section B – 1 Mark Each

Q5. Find the exact value of:

4,63,128 + 4,19,682 = ______

Answer: 8,82,810

Q6. ______ lakhs make a million.

Answer: 10 lakhs

Q7. Calculate:

250 × 120 = ______

Answer: 30,000

Q8. Compare and write <, > or =:

210 crore ______ 20 billion

Answer: 210 crore < 20 billion

Section C – 1 Mark Each

Q9. Write the following number in Indian place value notation:

Ten billion ten million twenty thousand one

Answer: 10,01,00,20,001

Q10. Write the following number in Indian place value notation:

One crore one lakh one thousand ten

Answer: 1,01,01,010

Q11. Read 20022002 in Indian place value notation and write its number names in both the Indian and American systems.

Answer:

• Indian notation: 2,00,22,002

• Indian number name: Two crore twenty-two thousand two

• American notation: 20,022,002

• American number name: Twenty million twenty-two thousand two

Section D – 2 Marks Each

Q12. Write the five nearest neighbours for 28,05,31,381.

Answer:
28,05,31,379
28,05,31,380
28,05,31,381
28,05,31,382
28,05,31,383

Q13. Calculate these products quickly:

(a) 25 × 32 = ______

Answer: 800

(b) 25 × 2400 = ______

Answer: 60,000

Q14. A calculator has only ‘+10,000’ and ‘+100’ buttons. Write an expression describing the number of button clicks to be made for the number 12,50,700.

Answer:

One possible expression is:

125 × 10,000 + 7 × 100

So, the calculator requires 125 clicks of +10,000 and 7 clicks of +100.

Q15. Creative Chikki is a different kind of calculator. It has the following buttons: +1, +10, +100, +1000, +10000. It always has multiple ways of doing things. To get the number 321, it presses +10 thirty-two times and +1 once. Will it get 321? Alternatively, it can press +100 two times and +10 twelve times and +1 once. Will it get 321? Find a different way to get 2,15,425.

Answer:

First method:

32 × 10 + 1 = 321

So, yes, it gets 321.

Second method:

2 × 100 + 12 × 10 + 1 = 321

So, this method also gives 321.

One different way to make 2,15,425 is:

21 × 10,000 + 5 × 1,000 + 4 × 100 + 2 × 10 + 5 × 1

= 2,15,425

Class 7 Maths Chapter 1 Important Questions PDF

For focused revision of Large Numbers Around Us, the Class 7 Maths Chapter 1 Important Questions PDF offers additional problems covering key concepts from the chapter. Attempt the questions independently, compare your answers afterwards, and revisit the concepts wherever you need more practice.

What Makes PW Class 7 Maths Chapter 1 Important Questions Useful?

Physics Wallah provides focused questions to help you practise the main concepts from Large Numbers Around Us and apply them to different types of numerical problems.

• Revise Place Value: Practise reading and writing large numbers using Indian and international place-value systems.

• Work with Number Names: Convert number names into numerals and identify their correct place values.

• Practise Large-Number Calculations: Solve addition and multiplication questions involving large values.

• Compare Different Number Systems: Understand the relationship between crore, lakh, million, and billion.

• Strengthen Number Sense: Work with nearest neighbours and recognise patterns in large numbers.

• Use Quick Calculation Methods: Practise efficient approaches for multiplication and other numerical operations.

• Solve Calculator-Based Questions: Apply number combinations to reach a required value using limited operations.

• Check Concept Understanding: Use the questions to identify mistakes in notation, calculations, and place-value concepts.

Large Numbers Around Us introduces ways to read, write, compare, and work with numbers used in everyday situations. These Class 7 Maths Chapter 1 Important Questions provide practice with place value, number systems, calculations, comparisons, and number-building activities. Solving them after revising the chapter can help you check your understanding and improve accuracy.

Related Resources

• CBSE Class 7 Maths Syllabus 

• CBSE Class 7 Maths NCERT Solutions

• CBSE Class 7 Maths Sample Papers

• CBSE Class 7 Maths Notes