# Class 7 Maths Chapter 13 Test Paper Set-2 Pdf Download CBSE

Test Paper Of Class 7 Maths Chapter 13 Exponents And Power

Chapter 13 Test Paper (02)

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## Class 7 Maths Chapter 13 Exponents And Power Test Paper Set-2 Text Form:-

PGRMS EDUCATION

SAMPLE PAPER (02)

CLASS: 7                                                        MAX. MARKS : 30 SUBJECT: MATHEMATICS                            TIME: 1:30 HOUR CH: 13 (Exponents and Powers)

General Instructions:

I. All questions are compulsory.

II. This question paper contains 14 questions divided into four Sections A, B, C and D.

III. Section A has 5 questions of 1 mark each. Section B has 4 questions of 2 marks each. Section C has 3 questions of 3 marks each. and Section D has 2 questions of 4 marks each.

IV. Use of Calculators is not permitted.

Section – A

In Questions 1 to 5, there are four options, out of which one is correct. Write the correct answer.

1. ( -7)5 x (-7)3 is equal to

(a) (-7)8                  (b) – (7)8                 (c) (-7)15                (d)   (-7)2

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• 2. For any two non-zero rational numbers x and y, x5 y5 ÷ is equal to

(a) (x÷y)1               (b) (x÷y)0                (c) (x÷y)5               (d) (x÷y)10

3. Value of 1022 + 1020 /1020 is

(a) 10                    (b) 1042                   (c) 101                   (d) 1022

4. Square of (-2/3) is

(a) -2/3                  (b) 2/3                    (c) -4/9                   (d) 4/9

5. Which of the following is not true?

(a) 32 > 23             (b) 43 = 26              (c) 33 = 9                (d) 25 > 52

Section – B

6. Express the following numbers as a product of powers of prime factors: (i) 432                                                (ii) 16000

7. Simplify:

(i) 23 × 5                                             (ii) 3 × 44

8. Say true or false:

(i) 10 × 1011 = 10011                           (ii) 23 > 52

(iii) 23 × 32 = 65                                   (iv) 30 = (1000)0

9. Using laws of exponents, simplify and write the answer in exponential form:

(iii) a3 × a2                                                                (iv) 7 x×72

Section – C

10. Express each of the following as product of powers of their prime factors:

(i) 648                             (ii) 405                     (iii) 540

11. Identify the greater number.

(i) 28  or 82                      (ii) 1002 or 2100         (iii) 210 or 102

12. Simplify:

(i) 3 × 44                        (ii) 0 × 102                (iii) 52 × 33

Section – D

13. Simplify and express each of the following in exponential form:

(a) 78 x a10 b7 c12/76 x a8 x b4 x c12

(b) 54 x 74 x 27/8 x 49 x 53

14. Express the number appearing in the following statements in standard form.

(a) 76,47,000                                 (b) 8,19,00,000

(c) 5, 83,00,00,00,000                   (d) 24 billion

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