1. Change to grams:
(a) 28.3 kg (b) 0.73 mg (c) 5628 cg (d) 7.1 hg
2. Change to ml:
(a) 5.3 kL (b) 62 L (c) 0.63 dL (d) 8.7 hL
3. Change to km:
(a) 5000 m (b) 62 Dm (c) 0.327 cm (d) 462 hm
4. Complete the table:
kilometres |
metres |
centimetres |
millimetres |
5 |
|||
0.3 |
|||
80 |
5. Give the most suitable unit for measuring:
(a) The weight of a bag of potatoes.
(b) The distance from Christchurch to Dunedin.
(c) The volume of medicine on a teaspoon.
(d) The thickness of a piece of glass.
(e) The amount of water in a 50 m long swimming pool.
6. Using the set of units {cubic centimetres, litres, square centimetres, metres, kilograms}
choose the most suitable unit to measure:
(a) The length of a car.
(b) The capacity of a petrol tank.
(c) The volume of a sugar lump.
(d) The area of the windscreen.
(e) The weight of the wheels.
7. Using the set of units {kilometres, millimetres, metres, centimetres} choose the most suitable unit to measure:
(a) The length of this page.
(b) The thickness of a piece of cardboard.
(c) The height of a building.
(d) The distance between Auckland and Wellington.
8. Convert the following times into 24 -hour clock time:
(a) 2.00 p.m.
(b) 7.15 a.m.
(c) 12.35 a.m.
(d) 10.53 p.m.
9. Convert the following 24 -hour clock times into a.m. and p.m. time:
(a) 1800
(b) 0345
(c) 1552
(d) 0037
10. At 0915 the temperature was 12 ^{o}C. At 1647 on the same day the temperature had gone up to 21.5 ^{o}C.
How long, in hours and minutes, was there between the two temperature readings and what was the difference in temperature?
11. A triathlon starts at 7.30 a.m. The winner completes the swimming section in 57 minutes. The cycling leg takes 1 hour and twelve minutes and the running leg takes 49 minutes. The changeover between each leg takes 4 minutes. How long does the winner take to complete the event and at what time does she finish?