Review of Introductory Mathematics
DECIMALS
Example:
Round off the following number to two decimal places.
3.473
Solution:
Step 1:
3 is the number to the right of the 2nd decimal place.
Step 2:
3 is less than 5, so drop the digit.
Step 3:
3.47 is the number rounded to two decimal places.
Example:
Round off the following number to two decimal places.
6.238
Solution:
Step 1:
8 is the number to the right of the 2nd decimal place.
Step 2:
8 is greater than 5, so drop the 8 and add one to the number in the
second decimal place (3 + 1 = 4).
Step 3:
6.24 is the number rounded to two decimal places.
Example:
Round off the following number to two decimal places.
6.2385
Solution:
Step 1:
8 is the number to the right of the 2nd decimal place.
Step 2:
8 is greater than 5, so drop the 8 and add one to number in the
second decimal place (3 + 1 = 4).
Step 3:
6.24 is the number rounded to two decimal places.
Rev. 0
Page 45
MA-01
