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

Find the multiplicative inverse of `-1 1/8`

Find the multiplicative inverse of `3 1/3`

By what numbers should we multiply `(-15)/20` so that the product may be `(-5)/7`?

By what number should we multiply `(-8)/13` so that the product may be 24?

Can you find a rational number whose multiplicative inverse is –1?

From a rope 40 metres long, pieces of equal size are cut. If the length of one piece is `10/3` metre, find the number of such pieces.

`5 1/2` metres long rope is cut into 12 equal pieces. What is the length of each piece?

Find `0 ÷ 2/3`

Find `1/3 xx (-5)/7 xx (-21)/10`

On a winter day the temperature at a place in Himachal Pradesh was –16°C. Convert it in degree Fahrenheit (°F) by using the formula.

`C/5 = (F - 32)/9`

Shalini has to cut out circles of diameter `1 1/4` cm from an aluminium strip of dimensions `8 3/4` cm by `1 1/4` cm. How many full circles can Shalini cut? Also calculate the wastage of the aluminium strip.

One fruit salad recipe requires `1/2` cup of sugar. Another recipe for the same fruit salad requires 2 tablespoons of sugar. If 1 tablespoon is equivalent to `1/16` cup, how much more sugar does the first recipe require?

The height of a rectangle in a histogram shows the ______.

In a frequency distribution with classes 0 – 10, 10 – 20 etc., the size of the class intervals is 10. The lower limit of fourth class is ______.

Size of the class 150 – 175 is ______.

Tally marks are used to find ______.

Upper limit of class interval 75 – 85 is ______.

In the class interval 20 – 30, the lower class limit is ______.

In the class interval 26 – 33, 33 is known as ______.

The difference between the upper and lower limit of a class interval is called the ______ of the class interval.