1. The length of a piece of stick is 175m. A boy measured as 180m, calculate the percentage error in the measurement.
2. Evaluate Log 1/81 base 9
4. Bar 6 point 0 minus bar 1 point 8
5. Find the antilogarithm of 1. 372
6. The number 186247 is correct to 186000. Which of the following can correctly describe as the degree of approximation made? (i) To the nearest hundred. (ii) to the nearest thousand. (iii) to 3 significant figures. (iv)to 4 significant figures.
7. What is the range of values of values of the population of Nigeria which is 150 million to the nearest 10 million?
8. A parking space for a car is 3m wide. How many cars can be parked in a garage which is 17 m wide?
9. Which of these is equal to a² - b² ?
10. Factorise u² - 5vu + 6v²