Question

(oll 3. Compare the following numbers: (i) 2 x 1012;3 x 1016 (ü) 1.5 x 1015; 4.5 x 108 (ü) 4 x 1014 , 3 x 1018 (iv) 2.5 x 1012; 3.5 x 108 () 1.7 x 108; 2.1 x 105 (g) 1.9x10 29 x 103 :​

Answer 1

Answer:

decide which one is greater.

Another way is to look at the power of 10.

The number with higher power of 10 is greater than the other.

(i) In numbers, 2.7 × 1012 and 1.5 × 108

2.7 × 1012 = 2.7 × 1000000000000 = 2700000000000

And,

1.5 × 108 = 1.5 × 8 = 1.5 × 100000000 = 150000000

So, 2.7 × 1012 is greater than 1.5 × 108

(ii) In numbers, 4 × 1014; 3 × 1017

4 × 1014 = 4 × 100000000000000 = 400000000000000

And,

3 × 1017 = 3 × 100000000000000000 = 300000000000000000

So, 3 × 1017 is greater than 4 × 1014