| 29) Conversational topic “Numbers and calculations” should include:
• Decimals and fraction, addition, subtraction, multiplication and division
Decimals and fractions a manufacturer is thinking about giving both metric measurements (for example, millimetres) and imperial measurements (for example, inches) in its product specifications.
Addition, subtraction, multiplication and division as we know they are basic processes which we learn about them since going to first school.
• Area, size and mass, weight, volume and density
The sizes of electrical wires are specified by a number which gives an area in square millimetres. For example, in a home, a 6 mm2 wire may be specified to supply an electric oven in a kitchen. This number gives the cross-sectional area of the conductor.
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