4MA0 Foundation January 2016 Paper 2 Q7
7
(a) Write down all the factors of 20 (2)
(b)
Start with the smallest number. (1)
3 −6 7 −10 −4
Write these numbers in order of size.Start with the smallest number. (1)
(c) Work out
(i) – 4 ÷ – 2
(ii) 2 – (– 3)
(2)(d) Work out 15% of 80 (2)
| Scheme | Marks |
|---|---|
| 1, 2, 4, 5, 10, 20 | B2 |
| (2) |
Notes
B2: B1 for 3 or more correct factors, with at most one error or 2 correct factors with no errors.
Ignore repeats, may be given as products.
If no answer on answer line, award B1 for a completely correct factor tree
| Scheme | Marks |
|---|---|
| – 10, – 6, – 4, 3, 7 | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| (i) 2 | B1 |
| (ii) 5 | B1 |
| (2) |
| Scheme | Marks |
|---|---|
| \(\dfrac{15}{100} \times 80\) | M1 |
| 12 | A1 |
| (2) |
Notes
M1: \(\dfrac{15}{100} \times 80\) oe or completely correct method.
A1: 80 ±12 gets M1 only