4. How much greater is 17.6 than 5.9? 5. 18.04 take away 8.7 gives what
number?
6. To keep fit, my sister runs everyday from Monday to Friaday. Last week, she ran 2.5 km, 3.25 km, 2.4 km, 2.10km, and 1.71 km. How far did she run last week?
7. An electrician needs the different lenghts of wire to complete his wiring job: 15.8m, 6.9m, 16.54m, 8.79m, 15.85m, and 19.45m?
a. How many meters of wire did he use?
b. If the roll of wire is 100m long, how many meters were left after he had completed the job?
8. Five athletes made a recor in 100 meter-dash track and field contest. The folloeing are the recorded time, in seconds: 14.3, 13.65, 12.6, 14.25, and 12.45
a. What is the difference in time between the fastest athlete and last
athlete to finish the race? b. If the second placer had ran 0.3 seconds faster, would he have won the race?
