Question

round off 3.449 to 2 significant numbers

Answer 1

Step-by-step explanation:

3.449 to be rounded off to two significant number

=> 3.5

[ significant number means all numbers except zero are taken into consideration ]

here 3.45 is three significant number

3.5 is two significant number

[if the next digit is equal to or more than 5, add one to the preceding digit ]