Chapter 12 – Exponents and Powers

136. At the end of the 20th century, the world population was approximately 6.1 × 10^9 people. Express this population in usual form. How would you say this number in words? 136. At the end of the 20th century the world population was approximately 6.1 × 10^9 people. Express this population in usual form. How [...]

135. An electron’s mass is approximately 9.1093826 × 10^–31 kilograms. What is this mass in grams? 135. An electron’s mass is approximately 9.1093826 × 10^–31 kilograms. What is this mass in grams? August 1, 2021 Category: Chapter 12 - Exponents and Powers , Maths , NCERT Class 8 ,

134. The volume of the Earth is approximately 7.67 × 10^–7 times the volume of the Sun. Express this figure in usual form. 134. The volume of the Earth is approximately 7.67 × 10^–7 times the volume of the Sun. Express this figure in usual form. August 1, 2021 Category: Chapter 12 - Exponents and [...]

133. An inch is approximately equal to 0.02543 metres. Write this distance in standard form. 133. An inch is approximately equal to 0.02543 metres. Write this distance in standard form. August 1, 2021 Category: Chapter 12 - Exponents and Powers , Maths , NCERT Class 8 ,

132. The planet Uranus is approximately 2,896,819,200,000 metres away from the Sun. What is this distance in standard form? 000 metres away from the Sun. What is this distance in standard form? 132. The planet Uranus is approximately 2 200 819 896 August 1, 2021 Category: Chapter 12 - Exponents and Powers , Maths , [...]

131. This table shows the mass of one atom for five chemical elements. Use it to answer the question given. (a) Which is the heaviest element? (b) Which element is lighter, Silver or Titanium? 131. This table shows the mass of one atom for five chemical elements. Use it to answer the question given. (a) [...]

130. Investigating Solar System The table shows the average distance from each planet in our solar system to the sun. 130. Investigating Solar System The table shows the average distance from each planet in our solar system to the sun. August 1, 2021 Category: Chapter 12 - Exponents and Powers , Maths , NCERT Class [...]

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 [...]