Mathematics SSS 2 First Term

Theme: Numbers and Numeration

WEEK 3

Approximation

Performance Objectives

Students should be able to;

1. Calculate numbers less than 1 involving multiplication and division using log table
2. Solve simple logarithm equations

Approximation of Numbers

Content

To approximate a number means to write a number near the original number that is a number, not exactly the original number. It may be a bit more or less than the original. Whole numbers can be approximated to the nearest ten, hundred, thousand, million, etc.

Sometimes we do not need to measure or calculate things exactly. We may only wish to have a rough idea, or to calculate only to a certain degree of accuracy. It is in such cases we talk of decimal places, significant figures of rounding off to the nearest unit, tens, etc. When this happens,.... View More