Mass and its measurement
Answers are for parents and teachers.
1
How many grams is 3.2 kg?
3200
2
A loaf of bread has mass 450 g. How many kilograms is that?
0.45 kg
3
On the pan are weights of 200 g, 50 g, 10 g and a 500 mg weight. Find the body’s mass in grams.
260.5 g
4
One of three identical coins is lighter. How do you find it in one weighing? Explain.
Weigh two coins: if balanced the third is light; otherwise the coin on the higher (lighter) pan.
5
Why must a wet or hot body not be placed on a balance pan?
Moisture can damage the balance and changes the mass; a hot body can distort the pan and spoil the measurement.