1. When a number is reduced by 15%, the answer is 6154. What is the original number?
2. A car travels 300km, measured correct to the nearest 5km. It travels this distance in six hours, measured correct to the nearest hour. Calculate the least possible average speed of the car. Give your answer in km/h, correct to 2 decimal places
3. What is the Highest Common Factor (HCF) of 315 and 42?
4. A pet shop had 40 rabbits. 22 were male. The others were female. The shop sold 10 of the rabbits. The probability that a rabbit picked at random is a male is now 1/2. How many female rabbits were sold?
5. How many centimetres are there in 3.7 metres?
6. A rectangle has a length of (x + 5) cm and a width of (2x – 3) cm. Its perimeter is 46cm. Calculate the value of x
7. Which of these numbers is 6 less than -1.4?
8. Which of these calculations would increase 400 by 7%?
9. In 1999 the minimum wage for adults was £3.60 per hour. In 2013 it was £6.21 per hour. What's the approximate percentage increase?
10. Which sequence is a geometric progression?
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