This sub-strand revises the expressions of decimal numbers using place value; the techniques of estimating using the rule of “rounding-off” decimal numbers. Computing with Addition, Subtraction, Multiplication and Division are also covered. Multiplication of decimal numbers by ‘whole numbers’ and by ‘decimal numbers’ are covered. The sub-strand focuses on the movement of the decimal point when dividing and multiplying decimal numbers. It covers conversions of fractions to decimals and vice versa with the multiplications and divisions of numbers by powers of 10.