Question

Write the number 2381.597 rounded off to a)3 significant figures b)2 decimal places c)nearest hundred

Answer 1

Answer:

2382

Step-by-step explanation:

if the numbers after the decimal is more than 500 we could round it to the next number

if it is less than 500 remove the numbers after decimal

eg:7458.350 will be 7458

6985.652will be 6986

Answer 2

Given: The number 2381.597.

To find: The number 2381.597 rounded off to

a) 3 significant figures

b) 2 decimal places

c) nearest hundred

Solution:

The number 2381.597 can be rounded off to 3 significant figures by shifting the decimal point in such a way that the term has only 3 significant figures and then, multiplying it to the power of 10.

$2381.597 = 238 * 10^{1}$

The number 2381.597 can be rounded off to 2 decimal places by eliminating the digit 7. The .59 is rounded-off to .60 since 7 is greater than 5.

$2381.597 = 2381.60$

The number 2381.597 can be rounded off to the nearest hundred by eliminating the 81 in the tens and ones place. The 3 in the hundreds place is changed to 4 because 81 is greater than 50.

$2381.597 = 2400$

Therefore, the number 2381.597 rounded off to

a) 3 significant figures is 238×10¹.

b) 2 decimal places is 2381.60.

c) nearest hundred is 2400.