Fill in the blanks with proper answers:

(1) When a negative number is raised to an even power, the sign of the number is ……. .

(2) When a positive number is raised to an odd power, the sign of the number is …….. .

(3) When a negative number is raised to an odd power, then the sign of the number is ……. .

(4) (−4)² = ……

(5) (−3)³ = ……

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Solution

(1) When a negative number is raised to an even power, the sign of the number is positive .

(2) When a positive number is raised to an odd power, the sign of the number is positive .

(3) When a negative number is raised to an odd power, then the sign of the number is negative .

(4) (−4)² = +16

Explanation: (−4)² = (−4)× (−4) = +16

(5) (−3)³ = −27

Explanation: (−3)³ = (−3)× (−3) × (−3) = −27

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Fill in the blanks

(1) +4 one the number line will be to ……… of zero.

(2) Total number of integers from −2 to +5 is …….

(3) ……. is the only number which has no positive or negative sign.

(4) {−1, −2, −3,……} are …….integers.

(5) …….is the next number greater than −5

Compare the following numbers :

(1) 2.7 x 10 raised to the power of 12 ; 1.5 x 10 raised to the power of 8

(2) 4 x 10 raised to the power of 14 ; 3 x 10 raised to the power of 17

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