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Chapter 1: Rational Numbers Exercise – 1.3

Question: 1

Subtract the first rational number from the second in each of the following:

Solution:

Question: 2

Evaluate each of the following:

Solution:

Question: 3

The sum of the two numbers is 5/9. If one of the numbers is 1/3, Find the others.

Solution:

It is given that:

The sum of the two numbers is 5/9.

One of the number is 13

Let, the other number be x.

Question: 4

The sum of the two numbers is -1/3. If one of the number is −12/3, Find the others.

Solution:

It is given that:

Question: 5

The sum of the two numbers is −4/3. If one of the number is -5, Find the others.

Solution:

It is given that:

Question: 6

The sum of the two rational numbers is -8. If one of the number is −15/7, Find the others.

Solution:

It is given that:

The sum of the two numbers is – 8.

Question: 7

What should be added to −7/8 so as to get 5/9?

Solution:

It is given that:

Question: 8

What number should be added to −5/11 so as to get 26/33?

Solution:

It is given that:

Question: 9

What number should be added to −5/7 to get −2/3?

Solution:

It is given that:

Question: 10

What number should be subtracted from −5/3 to get 5/6?

Solution:

It is given that:

Question: 11

What number must be subtracted from 3/7 to get 5/4?

Solution:

It is given that:

Question: 12

Solution:

It is given that:

Question: 13

What should be added to (1/2 + 1/3 + 1/5) to get 3?

Solution:

It is given that:

Question: 14

What should be subtracted from (3/4 -2/3) to get −1/6?

Solution:

It is given that:

Question: 15

Fill in the blanks:

Solution:



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