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Fractions

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FRACTIONS, RATIOS, DECIMALS AND PERCENTAGES

Fractions and Percentages A fraction can be converted to decimal by dividing the numerator by its denominator. It can be changed to percentage by simply multiplying by 100. Example 5.1 Change 3/8 into a decimal and percentage Convert 0.145 to percentage Solution 1)         3/8 = 0.375 in decimal 3/8 x 100% = 37.5% 2)         0.145×100=14.5%   Example 5.2 To change percentage to decimal fraction, simply divide by 100 and then convert to decimal fraction. E.g. convert 92% to decimal   Solution 92 100 920 900 200 200      =0.92     Example 5.3 Change the following to percentages (a) 0.125    (b) 0.002   Solution (a) 0.125×100% = 12.5% (b) 0.002 = 0.002×100% = 0.2%   Change the following to decimal fractions (A) 45 %    ( b) 8/3%   Solution 45/100=0.45 8/3= 8/3 ÷100/1= 8/3 x 1/100 = 8/300 = 4/150 = 2/75 0.02666   75        200 150 500 450 500 450… Read More »FRACTIONS, RATIOS, DECIMALS AND PERCENTAGES

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ALGEBRAIC EXPRESSION

Content
(a.) Letters for numbers
(b.) Algebraic fractions
(c.) Simplification of algebraic expressions
(d.) Factorization by grouping
(e.) Removal of brackets
(f.) Substitution and evaluation
(g.) Problem solving in real life situations.

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DECIMALS

Content
(a.) Fractions and decimals
(b.) Recurring decimals
(c.) Recurring decimals and fractions
(d.) Decimal places
(e.) Standard form
(f.) Operations on decimals
(g.) Order of operations
(h.) Real life problems involving decimals.

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FRACTIONS

Content
(a.) Fractions
(b.) Proper, improper fractions and mixed numbers.
(c.) Conversion of improper fractions to mixed numbers and vice versa.
(d.) Comparing fractions.
(e.) Operations on fractions.
(f.) Order of operations on fractions
(g.) Word problems involving fractions in real life situations.

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