Write the cubes of-1 -2 2-13 -54 -75 -106 27 38 109110

(1) (−2)3 = (−2) × (−2) × (−2) = − 8 Thus, the cube of −2 is −8. (2) (+1)3 = (+1) × (+1) × (+1) = 1 Thus, the cube of +1 is 1. (3) (−5)3 = (−5) × (−5) × ( ...

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Standard VII

Mathematics

Cube Numbers

Write the cub...

Question

Write the cubes of:

(1) −2

(2) +1

(3) −5

(4) +7

(5) −10

(6) 2

(7) 3

(8) 10

(9)

(10)

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Solution

(1) (−2)³ = (−2) × (−2) × (−2) = − 8

Thus, the cube of −2 is −8.

(2) (+1)³ = (+1) × (+1) × (+1) = 1

Thus, the cube of +1 is 1.

(3) (−5)³ = (−5) × (−5) × (−5) = −125

Thus, the cube of −5 is −125.

(4) (+7)³ = (+7) × (+7) × (+7) = 343

Thus, the cube of +7 is 343.

(5) (−10)³ = (−10) × (−10) × (−10) = −1000

Thus, the cube of −10 is −1000.

(6) 2³ = 2 × 2 ×2 = 8

Thus, the cube of 2 is 8.

(7) 3³ = 3 × 3 × 3 = 27

Thus, the cube of 3 is 27.

(8) 10³ = 10 × 10 ×10 = 1000

Thus, the cube of 10 is 1000.

(9)

Thus, the cube of is.

(10)

Thus, the cube of is .

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(i)

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(ii)

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(iii)

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(iv)

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Write the cubes of: (1) −2 (2) +1 (3) −5 (4) +7 (5) −10 (6) 2 (7) 3 (8) 10 (9) (10)

Write the cubes of:

(1) −2

(2) +1

(3) −5

(4) +7

(5) −10

(6) 2

(7) 3

(8) 10

(9)

(10)