**1. What is four-fifths as a decimal?**

*0.8*

**2. What is the volume of a cube which has edges measuring 5cm?**

*125cm³ (centimetres cubed)*

**3. How many months are there in twelve years?**

*144*

**4. What is the next number in the series: 2, 9, 30, 93, …?**

*282 (multiply the previous number by three and then add three)*

**5. If y=10x − 1 and the value of x is 10, what is the value of y?**

*99*

**6. If a recipe requires 400 grams of potatoes for four people, how many kilograms would be required for twelve people?**

*1.2kg (Note difference in measurement – question given in grams and answer requires conversion to kilograms)*

**7. A dress has a thirty percent discount applied and is on sale for £63. What was the original price of the dress before the reduction?**

*£90*

**8. Geoff thinks of a number. He deducts five from it and then divides the result by three. His answer is 25. What number did he start with?**

*80*

**9. What is nine-tenths of 2000?**

*1800*

**10. 3 − 7 × 4 = ?**

*-25 (minus 25 – multiplication should be completed before subtraction)*