The number 80710 , when rounded off to 2 significant figures, would appear as
81000
80700
none of these
8100
8070

When rounding the number 80710 to two significant figures, you look at the first two digits (80) and then consider the next digit (7) to determine if you round up. Since 7 is greater than 5, you round up 80 to 81, giving you 81000. So, the correct answer is 81000!

Rounding can sometimes get tricky, especially with large numbers or those with zeros involved. A common mistake is to only rely on the first digits without considering what follows. Remember, the key to proper rounding is keeping an eye on the digit immediately after the one you’re rounding!