CXC Math Topic: COMPUTATION (2010)

CXC Math Topic: COMPUTATION (2010)


On completion of this section students should be able to:

1. demonstrate an understanding of place value;

2. demonstrate computational skills;

3. be aware of the importance of accuracy in computation;

4. appreciate the need for numeracy in everyday life;

5. demionstrate the ability to make estimates fit for purpose.

SPECIFIC OBJECTIVES: The student should be able to:

1. perform computation using any of the four basic operations with real numbers;

Addition, multiplication, subtraction and division of whole numbers, fractions and decimals.

2. Convert among fractions, percentages and decimals;

Conversion of fractions to decimals and percentages, conversion of decimals to fractions and percentages, conversion of percentages to decimals and fractions.

3. convert from one set of units to another;

Conversion using conversion scales, converting within the metric scales, 12- hour and 24 hour clock, currency conversion.


express a value to a given number of:

(a) significant figures;

(b) decimal places;

1,2 or 3 significant figures.

1,2, or 3 decimal places.

5. write any rational number in standard form;

Scientific notation.

6. calculate any fraction or percentage of a given quantity;

Calculating fractions and percentages of a whole.

7. express one quantity as a fraction or percentage of another;

Comparing two quatities using fractions and percentages.

8. compare two quantities using ratios;

Ratio and proportion.

9. divide a quantity in a given ratio;

Ratio and proportion.


solve problems involving:

(a) fractions;

(b) decimals;

(c) percentages

(d) ratio, rates and proportions;

(e) arithmetic mean.

Here are our computation tutorials to help you prepare for this section of the CXC math exam.

Meloney (not verified) 14 August 2011 - 8:29pm

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Aaisha Akbar (not verified) 2 February 2014 - 9:26pm

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aaliyah (not verified) 22 September 2015 - 8:36pm

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shaveena williams (not verified) 17 February 2018 - 12:58pm

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