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Exponents and Powers Worksheet-1

Exponents and Powers Worksheet-1

 

  1. Simplify: 2–3

(a)                    (b) –8                 (c)                    (d)

 

  1. 5–3 = 5 ?

(a) –125             (b) 125                (c)                (d)

 

  1. Find the missing exponent :

(a) 4                    (b) –4                 (c) –3                 (d) 3

 

  1. Evaluate: 10–2

(a) 0.1                 (b) 10                  (c) 0.01              (d) 1

 

  1. 7–3 is same as ______.

(a) 7 × 3             (b) 343               (c) –343             (d)

 

  1. 1–3 = ?

(a)                    (b) –5                 (c) –1                  (d) 1

 

  1. Which of the following is equal to 0.04?

(a) 52                   (b) 5–2                 (c) 2–3                 (d) 4–10

 

  1. Write  as an expression using negative exponent.

(a) 3–3                 (b) 27–3              (c) 32 × –3         (d) 9–3

 

  1. Which of the following is equal to –32?

(a) (–2)3            (b) (–4)3            (c) 2–3                 (d) 8–2

 

  1. Write  as an expression using negative exponent.

(a) 1–3                 (b) 10–5               (c) 10–3               (d) 10–10

 

  1. When you are dividing terms with the same base you ______ the exponents.

(a) subtract       (b) add               (c) multiply       (d) divide

 

  1. How do you write the following expression using a base and exponent?

–2 × –2 × –2× –2× –2

(a) –23                (b) (–2)3            (c) –24                (d) 2–3

 

  1. How do you write the following expression in exponential form?

5 × r × r × r × p

(a) 5r2p              (b) r3p                (c) 3r5p               (d) 3r3p

 

  1. 4  4  4  m  m  m = ______ ?

(a) 43m3             (b) 42m3             (c) 433m            (d) 432m3

 

  1. 52 + 32 = ?

(a) 25                  (b) 34                 (c) 64                  (d) 4,096

 

  1. When you are multiplying terms with the same base you ______ the exponents.

(a) subtract       (b) multiply       (c) add                (d) divide

 

  1. Evaluate:

(a) 7–5                 (b) 713                 (c) 75                   (d) 76

 

  1. (x2) * (x3) = ?

(a) x6                   (b) x8                  (c) x                    (d) x5

 

  1. Evaluate:  65 ÷ 63

(a) 6                    (b) 68                  (c) 6–2                 (d) 62

 

  1. Type “A” bacteria population doubles every one minute. These are 100 bacteria in a dish. Which expression shows the number of bacteria in 5 minutes?

(a) 25 + 100       (b) 2 × 1005       (c) 100 × 25       (d) 100 × 52

 

Answer Key:

(1)-(d); (2)-(c); (3)-(b); (4)-(c); (5)-(d); (6)-(d); (7)-(b); (8)-(a); (9)-(a); (10)-(c); (11)-(a); (12)-(b); (13)-(d); (14)-(a); (15)-(b); (16)-(c); (17)-(c); (18)-(d); (19)-(d); (20)-(c)