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

Find the value of `(1/2)^(-2)+(1/3)^(-2)+(1/4)^(-2)`

Evaluate.

`(8^(-1)xx5^(3))/2^(-4)`

Evaluate.

(5⁻¹ × 2⁻¹))× 6⁻¹

6 pipes are required to fill a tank in 1 hour 20 minutes. How long will it take if only 5 pipes of the same type are used?

The following data gives total marks (out of 600) obtained by six children of a particular class. Represent the data on a bar graph.

Find the multiplicative inverse of the following.
2^{– 4}

Find the multiplicative inverse of the following.

Find the multiplicative inverse of the following.
10^{– 5}

Expand the following numbers using exponents.

1025.63

Expand the following numbers using exponents.

1256.249

Rational numbers are closed under addition and multiplication but not under subtraction.

Give one example each to show that the rational numbers are closed under addition, subtraction and multiplication. Are rational numbers closed under division? Give two examples in support of your answer.

A number ending in 9 will have the units place of its square as ______.

Which of the following will have 4 at the units place?

Which among 43², 67², 52², 59² would end with digit 1?

A perfect square can never have the following digit in its ones place.

The units digit in the square of 1294 is ______.

The square of 500 will have ______ zeroes.

The digit at the ones place of 57² is ______.