Computation
Master CSEC computation — the four operations on whole numbers, fractions and decimals; converting among fractions, decimals and percentages; units, time and currency conversion; significant figures, decimal places and standard form; and ratio, proportion, rates and the arithmetic mean. Each lesson has worked examples, exam-style questions and practice.
14 lessons
Curriculum
Operations with Real Numbers
- 📄The Four Operations and Order of Operations
- 📄Operations with Fractions and Decimals
Fractions, Decimals and Percentages
- 📄Converting Among Fractions, Decimals and Percentages
- 📄Fractions and Percentages of Quantities
Units, Significant Figures and Standard Form
- 📄Converting Units, Time and Currency
- 📄Significant Figures, Decimal Places and Standard Form
Ratio, Proportion and the Mean
- 📄Ratio, Proportion and Dividing in a Ratio
- 📄Problem Solving: LCM, Rates and the Arithmetic Mean
Approximation, Recurring Decimals and Estimation
- 📄Approximation to the Nearest Whole Number and Power of Ten
- 📄Recurring Decimals
- 📄Estimation and the Range of an Exact Value
Proportion, Powers and Roots
- 📄Proportional Parts and Inverse Proportion
- 📄Word Problems with Fractions, Decimals and Mixed Numbers
- 📄Squares, Square Roots and Reciprocals