FRACTONS
A fraction is a number that can be written in the form of a/b
The number which is written on top of fraction is called Numerator and the bottom is called denominator.
(d) Equivalent fractions
- These are two or more fractions that can be simplified to equal lowest fraction.
Fraction can be represented on number lines.
E.g. represent 1/2 on a number line.
Exercise 1
1. (i) Which of the following are;-
(a) Proper fractions
(b) Mixed fractions
(c) Improper fractions
(ii) List four equivalent fractions
Four equivalent fractions are;-
2. Write the following fractions in words
3. Write the name of the fraction of the shaded part in figures 1 and figure 2.
1/4=One over four (A quarter), which is a proper fraction.
Comparison of fraction
Fraction can compare by using two methods
(i) Number line
(ii) L.C.M of the denominators
(I) Number line
(II) L.C.M of the denominators
Operations on fractions
Addition and subtraction of fraction.
NOTE:
1. Add the numerator together if each fraction has the same denominator.
2. If the fraction has different denominator, you must find the smallest number that each denominator divides into exactly. (LCM)
3. When adding fractions, do not add the denominator.
Example:
Evaluate the following fractions
Multiplication
NOTE: 1. Before multiplying a number convert mixed number into improper fractions.
2. Multiply the numerators and multiply the denominator.
Dividing fractions
1. When dividing fractions invert the second fraction then multiply the first fraction by the inverted fraction.
