Free practice on Metric System for Class 6, following the Cameroon primary school curriculum (English subsystem). Every answer is explained, so a parent who is not sure of the answer can still help.
Length: 1 km = 1000 m; 1 m = 100 cm; 1 cm = 10 mm. Weight: 1 tonne = 1000 kg; 1 kg = 1000 g. Capacity: 1 L = 1000 ml = 100 cl = 10 dl.
| From → To | Rule |
|---|---|
| km → m | × 1000 |
| m → cm | × 100 |
| kg → g | × 1000 |
| tonne → kg | × 1000 |
| L → ml | × 1000 |
| cl → ml | × 10 |
Rectangle: l × w. Square: s². Triangle: ½ × b × h. Parallelogram: b × h. Trapezium: ½ × (a + b) × h. Circle: πr².
| Shape | Area |
|---|---|
| Rectangle | l × w |
| Square | s × s |
| Triangle | ½ × b × h |
| Parallelogram | b × h |
| Trapezium | ½ × (a + b) × h |
| Circle | πr² |
Perimeter = distance around a flat shape. Circumference = perimeter of a circle = 2πr. Volume of a cube = side³. Volume of a cuboid = l × w × h.
| Shape | Perimeter / Volume |
|---|---|
| Rectangle P | 2(l + w) |
| Circle C | 2πr |
| Cube V | s³ |
| Cuboid V | l × w × h |
| Cylinder V | πr²h |
Convert 3.2 kg to grams.
Write your answer, then check below.
Answer: 3200
How many centilitres are in 0.75 litres?
Write your answer, then check below.
Answer: 75
1 litre = 100 cl.
Convert 4500 m to kilometres.
Answer: B. 4.5 km
A square field has sides of 12 m. What is its area in square metres?
Write your answer, then check below.
Answer: 144
A rectangular football field is 15 m by 8 m. What is its area in square metres?
Write your answer, then check below.
Answer: 120
A triangle has base 12 cm and height 5 cm. What is its area in square cm?
Write your answer, then check below.
Answer: 30
Area = ½ × 12 × 5 = 30.
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