Question

Round the following numbers to 2 significant digits.
(a) 3472, (b) 84.16. (c)2.55 and (d) 28.5

Answer 1

Explanation:

(a) After rounding off it will be 3500 because after digit 4 , 7 is present whose value is greater than 5 and the next two digits are neglected and the value of 4 is increased by 1.

(b)After rounding off it will be 84

(c)After rounding off it will be 2.6

(d)After rounding off it will be 28

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Answer 2

Round the following numbers to 2 significant digits.

(a) 3472 = 3500

(b) 84.16 = 84

(c)2.55 = 2.6

(d) 28.5 = 28.  

Explanation:    

Rounding the following numbers to two significant digits :

a) 3472 = when miscalculation off it'll be 3500 as a result of when digit four , seven is present whose values is bigger than five and also the next 2 digits area unit neglected and also the value of four is exaggerated by one.  

(b) 84.16 = when miscalculation off it'll be eighty four .

(c) 2.55 = when miscalculation off it'll be 2.6

(d) 28.5 = when miscalculation off it'll be twenty eight .

Thus, the given values are rounded to two significant digits.