Secondary School (English Medium) (5 to 8) इयत्ता ८ - CBSE Question Bank Solutions for Mathematics

A five-digit number AABAA is divisible by 33. Write all the numbers of this form.

Find the value of k where 31k2 is divisible by 6.

1y3y6 is divisible by 11. Find the value of y.

756x is a multiple of 11, find the value of x.

If 148101B095 is divisible by 33, find the value of B.

If 123123A4 is divisible by 11, find the value of A.

If 56 × 32y is divisible by 18, find the least value of y.

Illustrate, if possible the following with a rough diagram:

An open curve is made up entirely of line segments.

Simplify and express the result in power notation with positive exponent.

`(−3)^4 × (5/3)^4`

Simplify and express the result in power notation with positive exponent.

(3⁻⁷ ÷ 3⁻¹⁰) × 3⁻⁵

Simplify and express the result in power notation with positive exponent.

2⁻³ × (−7)⁻³

Two persons could fit new windows in house in 3 days.

How many persons would be needed to fit the windows in one day?

Using appropriate properties find.

`-2/3 xx 3/5 + 5/2 - 3/2 xx 1/6`

Using appropriate properties find

`2/5 xx (-3/7) - 1/6 xx 3/2 + 1/14 xx 2/5`

Name the property under multiplication used in given:

`-13/17 xx ((-2)/7) = (-2)/7 xx ((-13)/17)`

Name the property under multiplication used in given:

`-19/29 xx 29/(-19) = 1`

Construct the following quadrilaterals.

Quadrilateral LIFT

LI = 4 cm

IF = 3 cm

TL = 2.5 cm

LF = 4.5 cm

IT = 4 cm

Construct the following quadrilaterals.

Quadrilateral GOLD

OL = 7.5 cm

GL = 6 cm

GD = 6 cm

LD = 5 cm

OD = 10 cm

Construct the following quadrilaterals.

Rhombus BEND

BN = 5.6 cm

DE = 6.5 cm

The squares of which of the following would be odd numbers?

1. 431
2. 2826
3. 7779
4. 82004