4400 Higher June 2010 Paper 4 Q8
8 Show that \(1\dfrac{1}{2} \div 1\dfrac{1}{4} = 1\dfrac{1}{5}\)
(3)
| Scheme | Marks |
|---|---|
| \(\frac{3}{2}, \frac{5}{4}\) or \(\frac{6}{4}, \frac{5}{4}\) | B1 |
| \(\frac{3}{2} \times \frac{4}{5}\) or \(\frac{6}{4} \times \frac{4}{5}\) or \(\frac{6}{4} \div \frac{5}{4}\) etc | B1 |
| \(\frac{6}{5}\) oe | B1 |
| (3) | |
| (3 marks) |
Notes
B1: converting both correctly to improper fractions
B1: Stated intention to multiply (if 2nd fraction inverted) or divide if denominators are the same (correct fractions)
B1: Must be improper fraction from previous calculation
Ignore all decimal treatments.