LATEST NCERT CLASS 8 MATHS CHAPTER 2G POWER PLAY PAGES 30, 31, 32

Описание: LATEST NCERT CLASS 8 MATHS CHAPTER 2G POWER PLAY PAGES 30, 31, 32

POWERS OF 10
We have used numbers like 10, 100, 1000, and so on when writing Indian
numerals in an expanded form. For example,
47561 = (4 × 10000) + (7 × 1000) + (5 × 100) + (6 × 10) + 1.
This can be written using powers of 10 as

Write these numbers in the same way: (i) 172, (ii) 5642, (iii) 6374.

How can we write 561.903?

SCIENTIFIC NOTATION
Let’s look at some facts involving large numbers —
(i) The Sun is located 30,00,00,00,00,00,00,00,00,000 m from the centre of our Milky Way galaxy.
(ii) The number of stars in our galaxy is 1,00,00,00,00,000.
(iii) The mass of the Earth is 59,76,00,00,00,00,00,00,00,00,00,000 kg.

Write the large-number facts we read just before in this form.

Can you say which of the three distances is the smallest?

The number line below shows the distance between the Sun and Saturn
(1.4335 × 10raised to power 12 m). On the number line below, mark the relative position of
the Earth. The distance between the Sun and the Earth is 1.496 × 10raised to power 11 m.

Express the following numbers in standard form.
(i) 59,853
(ii)65,950
(iii) 34,30,000
(iv) 70,04,00,00,000