Secondary School (English Medium) (5 to 8) कक्षा ७ - CBSE Question Bank Solutions for Mathematics

Taking x = `(-4)/9`, y = `5/12` and z = `7/18`, find the sum of reciprocals of x and y.

Taking x = `(-4)/9`, y = `5/12` and z = `7/18`, find (x ÷ y) × z.

Taking x = `(-4)/9`, y = `5/12` and z = `7/18`, find (x – y) + z.

Taking x = `(-4)/9`, y = `5/12` and z = `7/18`, find x ÷ (y ÷ z).

What should be divided by `1/2` to obtain the greatest negative integer?

From a rope 68 m long, pieces of equal size are cut. If length of one piece is `4 1/4`m, find the number of such pieces.

If 12 shirts of equal size can be prepared from 27 m cloth, what is length of cloth required for each shirt?

All congruent triangles are equal in area.

Find the following product:

(−21) × (−30)

Find the following product: 

(−316) × (−1)

Find the area of the following parallelogram:

Find the area of the following parallelogram:

Find the area of the following parallelogram:

Find the area of the following parallelogram:

Find the area of the following parallelogram:

Find the missing value:

PQRS is a parallelogram (see the given figure). QM is the height from Q to SR and QN is the height from Q to PS. If SR = 12 cm and QM = 7.6 cm. Find:

1. the area of the parallelogram PQRS
2. QN, if PS = 8 cm

DL and BM are the heights on sides AB and AD respectively of parallelogram ABCD (see the given figure). If the area of the parallelogram is 1470 cm², AB = 35 cm and AD = 49 cm, find the length of BM and DL.

Convert the given fractional number to percent.

`1/8`

Convert the given fractional number to percent.

`5/4`