Question

Round off each number to the indicated number of significant figures (sf)

(a) 231.554 (to 4 sf)
(b) 0.00845 (to 2 sf)
(c) 144.100 (to 2 sf}.

Answer 1

The answer is B

Step-by-step explanation:

Answer 2

(a)
`2.316x10^2` or
`231.6`

(b)
`8.5x10^(-3)`

(c)
`1.4x10^2`

Step-by-step explanation:

Hello,

In this case, we must remember that we round numbers if the next number is equal or greater than 5 and that left-sided zeros are not included in the final result, in such a way:

(a)
`2.316x10^2` or
`231.6`

(b)
`8.5x10^(-3)`

(c)
`1.4x10^2`

Best regards.