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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 0oC are positive numbers, 20o C above 0oC 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 0oC. It is positive.
Therefore, appropriate sign for 30oC above 00C is 30.
= (- 140) x +8
= - 140 x 8
= - 1120
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