Question

Solve for DE. Round to the nearest hundredth.

a) 2.82
b) 3.16
c) 3.54
d) 2.50

Answer 1

To round off a number to two significant figures, look at the first two digits from left to right, rounding up if the third digit is greater than or equal to 5, and rounding down if the third digit is less than 5.

Step-by-step explanation:

To round off a number to two significant figures, we look at the first two digits from left to right. If the third digit is greater than or equal to 5, we round up. If the third digit is less than 5, we round down.

Using this rule, we can round off the given numbers:

1. (a) 517 rounds to 520
2. (b) 86.3 rounds to 86
3. (c) 6.382 x 10³ rounds to 6.4 x 10³
4. (d) 5.0008 rounds to 5.0
5. (e) 22.497 rounds to 22
6. (f) 0.885 rounds to 0.89