Important Questions Test: Integers

Adding two positive integers always yields a positive sum; adding two negative integers always yields a negative sum. 

= (-14) + 9 

= -14 + 9 

= -5

= (-140) x 8 

= -1120 

-2 is on the right of -3 on the number line as it a bigger number than -3.

Let the number be x

Therefore, 7 times x would be 7x

= 7x + 7 = 77

= (– 4) + (+ 3)

= - 4 + 3 

= - 1

As we know, in negative numbers, the number with larger absolute value is smaller. 

Therfore, - 26 is smaller than - 25.

The opposite of 50 km of south is 50 km of north.

= a x b - a x c

= 2 x 10 - 2 x 6 

= 20 - 12 

= 8

Every positive integer is larger than every negative integer.

As number over 0^oC are positive numbers, 20^o C above 0^oC will be written as 20. 

Sea level is considered as 0, thus any number below 0 will be a negative number. 

Therfore the appropriate sign for 150 m below the sea level is -150.

Positve numbers are always greater than negative numbers.

Therefore, -13 < 13

All positive numbers are greater than negative numbers. 

Therefore, 2 is greater than - 1

0 is greater than every negative number. 

Therefore, 0 > - 15

0 is less than every positive integer

= (– 11) + (– 12)

= - 11 - 12 

= - 23

On the right side of zero lies the positive numbers. 

Therefore, farther a number from zero on the right, larger is its value.

As the temperature lies above 0^oC. It is positive. 

Therefore, appropriate sign for 30^oC above 0⁰C is 30.

= (- 140) x +8 

= - 140 x 8 

= - 1120