Olympiad Test : Integers - 1
10 Questions MCQ Test | Olympiad Test : Integers - 1
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An additive inverse of a number is defined as the value, which on adding with the original number results in zero value.
Let the additive inverse of −7 be x.
⇒−7+x=0
∴ x=7
Hence the additive inverse of −7 is 7
– 6 – 2 = –8
The sum of two integers is –17. If one of them is 12 then the other is
If x is other number, then 12 + x = –17 x = –17–12 = – 29
The sum of two integers is 23. If one of them is –7 then the other is
x +(–7) = 23
⇒ x = 23 + 7 = 30
-7 + 4 = -3
? = 9(-16) + (-12)(-16)
= –144 +192 = 48
? = (–12)7 + (–12) (– 4)
= –84 + 48 = – 36
The sum of two integers is 65. If one of them is –47 what is the other number?
– 47 + x = 65
⇒ x = 65 + 47 = 112
The difference of two integers is –27. If one of them is 32 then what is the other?
32 - x = -27
⇒ x = 32 + 27 = 59
From the sum of 33 and –47, –84 is subtracted. What is the result?
Required result = [33+(–47)] –(–84)
= –14 + 84 = 70
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