__Objective__

At the end of this lesson, students should be able round decimal numbers to the nearest whole number, tenth, hundredth or thousandth.

Rounding a decimal means representing it by a number to which the decimal is nearest to.

Rounding a decimal numbers allows us to write the number in a way to suit our purposes. Decimals can be rounded to the nearest whole number, tenth, hundredth, thousandth, etc.

**If we are to round to the nearest whole number:**

a) **3**.54 = 4 b) **3.**49 = 3 c) **3**.504 = 4 d) **3**.497 = 3

A similar idea is what we use to round figures. Below are some examples:

__Example 1__

*Round these decimal numbers to the nearest whole number.*

a) 2.63 b) 13.429 c) 238.532

__Example 2__

**Round to the nearest tenth (1 decimal place):**

a) 4.829 b) 13.499 c) 6.952

__Example 3__

**Round to the nearest hundredth (2 decimal places)**

a) 4.826 b) 267.199 c) 10.841

__Example 4__

**Round to the nearest thousandth (3d.p)**

a) 2.8469 b) 18.2195 c) 9.1111

__Solution__

a) 2.84**6**9 = 2.847

b) 18.21**9**5 = 18.220

c) 9.11**1**1 = 9.111

Login

Accessing this unit requires a login, please enter your credentials below!