Test: Rational Numbers- 1 - Class 8 MCQ

• 
• Hence the additive inverse of - 2/3 is 2/3.

In order to  find the multiplicative inverse of  the given number, find the reciprocal of that number.
Here the given number is -13
So the reciprocal of -13 will be -1/13

Therefore, option C is the correct answer. 

Every rational number is not a fraction.
In rational numbers, we use integers and in fractions, we use only natural numbers.

Answer: C) -2.1, -1, 0, 1, 2

Rational numbers greater than -2 are those that are either closer to zero or positive numbers. Option C contains values such as -2.1, -1, 0, 1, and 2, all of which are greater than -2.

It is the associative property and we know that the rational numbers are associative under addition.
 For eg: 5/3 + (3/2 + 1/3) = 7/2;
  (5/3 + 3/2) + 1/3 = 7/2
Here, Option 'a' is the correct answer.

Therefore, a+(b+c) = (a+b)+c

Option C: -2/3, because -2/3 is a rational number that lies between 0 and -1. The number 0 is greater than -2/3, and -3 is less than -1, while 4/3 is greater than 1, making it outside the range. ​

-7 / 8 x 4 / 21 = - 1 / 6 - To find the product of two fractions, multiply the numerators together and the denominators together.
- (-7/8) * (4/21) = (-7 * 4) / (8 * 21) = -28 / 168
- Simplifying the fraction by dividing both the numerator and denominator by 4, we get -7 / 42
- Further simplifying by dividing both the numerator and denominator by 7, we get -1 / 6
- Therefore, the correct answer is A: -1/6.

So option A is the correct answer. 

Answer: B) Associative Property of Division

Explanation: The equation demonstrates the use of the Associative Property of Division, which states that when dividing multiple numbers, the way they are grouped does not affect the result. Thus, changing the grouping in this case gives the same result.