1. What is an integer?
2. What is a rational number?
| See Types of Numbers |
Arithmetic
This section looks at the different ways in which numbers are represented.
Try the following questions to refresh your memory and check your skills. If you have any difficulty follow the underlined links for further information.
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Self-Test
Questions
3. Round off $31\mbox{.}786$ to 2 decimal places.
4. Round off $0\mbox{.}31786$ to 2 significant figures.
| See Rounding Off |
5. Reduce the fraction $\displaystyle \frac{24}{32}$ to its simplest from.
6. Evaluate the difference $\displaystyle \frac{2}{4} - \frac{4}{6} \ $, writing your answer as a fraction in its simplest form.
7. Evaluate the product $\displaystyle \frac{2}{4} \times \frac{4}{6} \ $, writing your answer as a fraction in its simplest form.
| See Fractions |
8. A cake mix required a mixture of flour to ground almond in the ration $3: 2$.
How much flour would be needed for $200 \ g$ of almonds?
9. How much flour and ground almond would be needed to produce a combined mixture of $600 \ g $?
| See Ratios |
10. A wheelbarrow cost $ \$ 80$ and was resold for $ \$ 100$. What was the percentage profit?
11. Sandshoes were sold for $ \$ 90$. If the markup was $50\%$, what was the original value of the shoes?
| See Percentages |