4MA0 Foundation June 2015 Paper 2 Q1
1
(a) Write a number in each box so that each calculation is correct.
(i) \(65 \times \boxed{\phantom{0000}} = 65\,000\)
(ii) \(4.56 \div \boxed{\phantom{0000}} = 0.0456\)
(2)(b) Here is a list of numbers.
−5 3 −7 4 1
Write down the smallest number in the list. (1)(c) Write down all the factors of 28 (2)
(d) Which two of the following numbers are prime numbers?
2 9 14 15 18 23 30
(2)| Scheme | Marks |
|---|---|
| (i) Answer: 1000 | B1 |
| (ii) Answer: 100 | B1 |
| (2) |
| Scheme | Marks |
|---|---|
| −7 | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| 1, 2, 4, 7, 14, 28 | B2 |
| (2) |
Notes
B2: B1 for at least 3 correct factors and none incorrect, may be seen as product pairs; ignore repeats; ignore negatives. Allow 1 mark if all correct and at most 1 incorrect.
| Scheme | Marks |
|---|---|
| 2, 23 | B2 |
| (2) | |
| Total 7 marks |
Notes
B2: B1 for 2 or 23; if more than 2 given, -1 for each incorrect value