Question

Find (4.54×10^8)-(3.98×10^8)

Answer 1

`5.6 *10^7`

Explanation:

Given

`(4.54*10^8)-(3.98*10^8)`

Required

Solve

`(4.54*10^8)-(3.98*10^8)`

Apply distributive law of algebra

`(4.54 - 3.98) *10^8`

Evaluate the expression in bracket

`(0.56) *10^8`

Remove bracket

`0.56 *10^8`

When a number is in standard form:
`a * 10^n`

The value of a must be:
`1 \le a \le 10`

So, the expression becomes:

`5.6 *10^(-1)*10^8`

Apply law of indices

`5.6 *10^(-1+8)`

`5.6 *10^7`