NCERT Class 8

129. Astronomy The table shows the mass of the planets, the sun and the moon in our solar system. (a) Write the mass of each planet and the Moon in scientific notation. (b) Order the planets and the moon by mass, from least to greatest. (c) Which planet has about the same mass as earth? [...]

128. Predicting the ones digit, copy and complete this table and answer the questions that follow. (a) Describe patterns you see in the ones digits of the powers. (b) Predict the ones digit in the following: 128. Predicting the ones digit copy and complete this table and answer the questions that follow. (a) Describe patterns [...]

127. An insect is on the 0 point of a number line, hopping towards 1. She covers half the distance from her current location to 1 with each hop. So, she will be at 1/2 after one hop, 3/4 after two hops, and so on. 127. An insect is on the 0 point of a [...]

126. The cells of a bacteria double itself every hour. How many cells will there be after 8 hours, if initially we start with 1 cell. Express the answer in powers. 126. The cells of a bacteria double itself every hour. How many cells will there be after 8 hours if initially we start with [...]

125. Planet A is at a distance of 9.35 × 10^6 km from Earth and planet B is 6.27 × 10^7 km from Earth. Which planet is nearer to Earth? 125. Planet A is at a distance of 9.35 × 10^6 km from Earth and planet B is 6.27 × 10^7 km from Earth. Which [...]

124. The cells of a bacteria double in every 30 minutes. A scientist begins with a single cell. How many cells will be there after 124. The cells of a bacteria double in every 30 minutes. A scientist begins with a single cell. How many cells will be there after August 1, 2021 Category: Chapter [...]

123. A new born bear weighs 4 kg. How many kilograms might a five year old bear weigh if its weight increases by the power of 2 in 5 years? 123. A new born bear weighs 4 kg. How many kilograms might a five year old bear weigh if its weight increases by the power [...]

122. If 5^m x 5^3 x 5^-2 / 5^-5 = 5^12 find m 122. If 5^m x 5^3 x 5^-2 / 5^-5 = 5^12 find m August 1, 2021 Category: Chapter 12 - Exponents and Powers , Maths , NCERT Class 8 ,

121. 16 x 10^2 x 64 / 2^4 x 4^2 121. 16 x 10^2 x 64 / 2^4 x 4^2 August 1, 2021 Category: Chapter 12 - Exponents and Powers , Maths , NCERT Class 8 ,

120. 125 x x^-3 / 5^-3 x 25 x x^-6 120. 125 x x^-3 / 5^-3 x 25 x x^-6 August 1, 2021 Category: Chapter 12 - Exponents and Powers , Maths , NCERT Class 8 ,