We measure length in metres and centimetres, weight in kilograms and grams, liquids in litres and millilitres, time in seconds, minutes and hours, and temperature in degrees Celsius. A ruler measures length, a weighing balance weight, a clock time and a thermometer temperature.
10 mm = 1 cm, 100 cm = 1 m, 1000 m = 1 km, 1000 g = 1 kg, 1000 mL = 1 L, 1000 kg = 1 tonne, 60 seconds = 1 minute, 60 minutes = 1 hour.
Best unit: cities apart – kilometres, a classroom – metres, a pencil – centimetres, a child – kilograms, an eraser – grams, a bucket of water – litres, cough syrup – millilitres.
Use it for: Class 4 GK, maths and science lessons, cooking with recipes and shopping.
Worked example: 🔢 How many grams make 1 kilogram? → 1000
“Kilo” means one thousand.
So 1 kilogram = 1000 grams.
Check: 1 kilometre is 1000 metres too — kilo always means 1000 ✓
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