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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
Which of the following numbers is to the right of 3 on number line?
2 is on the right of 3 on the number line as it a bigger number than 3.
Write the statement “Seven times a number plus 7 gets you 77” in the form of equations.
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.
If a x (b −c) is 8 for a = 2, b = 10 and c = 6 then a x b − a x c is equal to
= a x b  a x c
= 2 x 10  2 x 6
= 20  12
= 8
Every positive integer is larger than every ________ integer.
Every positive integer is larger than every negative integer.
Which is the right form of integer ‘20^{°}C above 0^{°}C’?
As number over 0^{o}C are positive numbers, 20^{o }C above 0^{o}C will be written as 20.
Write the number with appropriate signs: 150 m below sea level.
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.
Compare pairs of numbers using > or <: 13 _____ 13
Positve numbers are always greater than negative numbers.
Therefore, 13 < 13
Which of the following number is greater than – 1?
All positive numbers are greater than negative numbers.
Therefore, 2 is greater than  1
Compare pairs of numbers using > or <: 0 _____ 15
0 is greater than every negative number.
Therefore, 0 >  15
0 is less than every positive integer
= (– 11) + (– 12)
=  11  12
=  23
Farther a number from zero on the right, _________ is its value.
On the right side of zero lies the positive numbers.
Therefore, farther a number from zero on the right, larger is its value.
Write the number with appropriate signs: 30°C above 0°C temperature
As the temperature lies above 0^{o}C. It is positive.
Therefore, appropriate sign for 30^{o}C above 0^{0}C is 30.
= ( 140) x +8
=  140 x 8
=  1120
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