Operations on Rational Numbers

Author:Jayashree Vipin
7th CBSE
IMPORTANT

Important Questions on Operations on Rational Numbers

MEDIUM
IMPORTANT

You are given these rational numbers,
13, 416, 512, 116, 123, 14

Find two numbers from this group whose quotient is 5.

MEDIUM
IMPORTANT

You are given these rational numbers,
13, 416, 512, 116, 123, 14

Find the two numbers from this group whose product is a member of the group.

MEDIUM
IMPORTANT

You are given these rational numbers,
13, 416, 512, 116, 123, 14

Find two numbers from this group whose difference is 112.

MEDIUM
IMPORTANT

You are given these rational numbers,
13, 416, 512, 116, 123, 14

Find two numbers from this group whose sum is 6.

MEDIUM
IMPORTANT

Mr.Thomas and his wife used to go to office on their bike. Then they started using the public transport bus to commute to their workplaces to reduce the consumption of petrol. They were using an average of 15 L petrol every month. If they used 512 L, 734 L and 614 L of petrol in the last three consecutive months. Find the average consumption of petrol per month now.

MEDIUM
IMPORTANT

To make one bottle of juice, 37 L of fruit juice content is required. How many bottles of juice can be prepared from a can of 10 L of fruit juice content. ?​

MEDIUM
IMPORTANT

Pradeep attempts 910 of the total number of questions in an examination. If 38 of the answers were wrong, what fraction of the attempted questions did he answer correctly?

MEDIUM
IMPORTANT

From a sari of length 614m, Susan cuts 234 m to stitch a skirt. Find the length of the remaining piece of the sari.

MEDIUM
IMPORTANT

To make a chocolate cake, Sudha requires 112 kg of maida, 35 kg of sugar and 120 kg of coco powder. Find the weight of the mixture when these three ingredients are mixed together 

MEDIUM
IMPORTANT

Sundara, Devi, Mumtaz and Annie worked on a project. Devi left the group when half of the project was completed. If they were paid 70000 for the project, find the share of each worker

EASY
IMPORTANT

Subtract -316 from 14.

EASY
IMPORTANT

Subtract 27 from 514.

MEDIUM
IMPORTANT

Ramu is varnishing wooden doors in a hotel. He has to varnish 16 doors of equal size. He starts with 212 cans of varnish. After varnishing four doors, he is left with 134 cans of varnish. Do you think he has enough varnish for the remaining doors?
 

EASY
IMPORTANT

Find the sum of the following rational numbers.

37 and -49

EASY
IMPORTANT

Find the sum of the following rational numbers.

-920 and -14

EASY
IMPORTANT

Find the sum of the following rational numbers.

59+-315+16

EASY
IMPORTANT

Find the sum of the following rational numbers.

38+-12+-34

EASY
IMPORTANT

Find the sum of the following rational numbers.

-712+913

EASY
IMPORTANT

Find the sum of the following rational numbers.

-314+-218