Foundation June 2019 Unit 2 Q5
5.
(a) Bethan writes down two square numbers.
She adds her two numbers together.
Her answer is a square number less than 30.
Which two square numbers did Bethan write down? [2]
She adds her two numbers together.
Her answer is a square number less than 30.
Which two square numbers did Bethan write down? [2]
Bethan’s square numbers are …………… and ……………
(b) Harri adds three even numbers together and gets an answer of 23.
Explain how you know that Harri’s answer is incorrect. [1]
Explain how you know that Harri’s answer is incorrect. [1]
| Scheme | Marks | Comments |
|---|---|---|
| 9 (and) 16 | B2 | Allow 32 (and) 42. B1 for a sum of two square numbers less than 30 seen in workings or two square numbers less than 30 written on the answer line. |
| Scheme | Marks | Comments |
|---|---|---|
Accept suitable explanations, e.g.
| E1 | Allow • even + even = even, • because 23 is odd. |