# Lesson Notes By Weeks and Term - Primary 6

ADDITION AND SUBTRACTION OF NUMBERS, DECIMAL AND FRACTION

WEEK 8

SUBJECT: MATHEMATICS

TERM: 1ST TERM

CLASS PRIMARY 6

TOPIC: ADDITION AND SUBTRACTION OF NUMBERS, DECIMAL AND FRACTION

BEHAVIORAL OBJECTIVES: At the end of the lesson, pupils should be able to:

identify mixed numbers and improper fractions

solve mixed operations of addition and subtraction of fractions

solve word problems involving addition and subtraction of fractions

CONTENT

MIXED NUMBERS AND IMPROPER FRACTIONS

2/5 is known as a proper fraction.

2

denominator

numerator 2 is less than 5; 5 is greater than 2

i.e. the numerator is less than the denominator or the denominator is greater than the numerator.

2/5

is less than 1. This fraction is called a proper fraction. Other examples of proper fractions are

1/2,

3/4,

5/8,

6/7,

8/15,

7/22, etc.

Improper fraction: Whenever the numerator is greater than the denominator then we have

an improper fraction.

## Examples

7/3 is an improper fraction. The numerator (7) is greater than the denominator (3). Further examples of improper fractions are

17/3,

19/5,

5/2,

4/3,

3/2,

21/8,

35/9…

In each case the numerator (top number) is greater than denominator (bottom number).

Improper fractions can be written as mixed numbers.      