Q1a,b | Computation | January 2015 CXC CSEC Mathematics Paper 2

January 2015 - Paper 2 - Caribbean Examination Council (CXC) Caribbean Secondary Education Certificate (CSEC) Mathematics. Questions 1a and 1b were based on the topic Computation.

Question 1a:
BODMAS:    • Sequence of Arithmetic Operations - Bodmas  
Powers of Numbers:    • Powers of Numbers  
Multiplication of decimals:    • Multiplication | Decimals | Whole numbers ...  
Division of Decimals:    • Division | Decimals | Whole numbers | Recu...  
Subtraction of decimals:    • Subtraction | Decimals | Whole Numbers | C...  
Question 1b:
Subtraction of fractions:    • Subtraction of fractions  
Multiplication of Fractions:    • Multiplication of fractions  
Addition of fractions:    • Addition of fractions  
LCM:    • Lowest Common Multiple (LCM)  

This topic:
COMPUTATION
(   • 2. Computation  )
Upon completion of this series of videos on this topic, you will understand/be able to:
1. Addition, multiplication, subtraction and division of whole numbers, fractions and decimals.
2. calculate any fraction or percentage of a given quantity
3. express one quantity as a fraction or percentage of another (Comparing two quantities using fractions and percentages)
4. Convert among fractions, percentages and decimals
a. Conversion of fractions to decimals and percentages
b. conversion of decimal to fractions and percentages
c. conversion of percentages to decimals and fractions
5. convert from one set of units to another
a. converting within the metric scales
b. 12-hour and 24-hour clock
c. currency conversion
6. express a value to a given number of
a. significant figures (1, 2 or 3 significant figures)
b. decimal places (1, 2 or 3 decimal places)
7. write any rational number in standard form (Scientific notation)
8. Ratios and Proportions
a. compare two quantities using ratios
b. divide a quantity in a given ratio
9. Solve problems involving:
a. rates
b. arithmetic mean

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Do you want to obtain excellent grades in Mathematics? Then, look no further. Upon completion, my channel will offers a complete course in Mathematics. The course is strategically structured, starting with the very basics, to cater to present and recent secondary school students, working professionals and mature candidates alike. These videos are equally great if you have never done the topic before or if you are just interested in revision.

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