1) A chemistry teacher requires 250 milligrams of a chemical for an experiment. He has 30 grams of the chemical. How many times can he carry out the experiment?

2) A bottle contains 1.5 litres of cola. Hannah drinks 300 ml of the cola and Ben drinks 450 ml.How much of the cola is left?

3) Emma estimates that the mass of one sweet is 20 grams. A packet contains 0.36 kg of these sweets. How many sweets would you expect to find in the packet?

3 answers

1. what is 30000/250 ?

2. what is 1500 - 300 - 450?

3. 1 kg = 1000 g
what do you think?

400

30000/250
=120 times