Q1a | Computation | May/June 2017 CXC CSEC Mathematics Paper 2

May/June 2017 - Paper 2 - Caribbean Examination Council (CXC) Caribbean Secondary Education Certificate (CSEC) Mathematics. Question 1a was based on the topic Computation.

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

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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