Lesson Notes By Weeks and Term - Primary 6

WEEK 8

SUBJECT: MATHEMATICS

TERM: 1^ST 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

 add and subtract mixed numbers

 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.