Level 2
A jar has 650 mℓ of water. A pitcher has 280 mℓ of water. How much more water must be added into the pitcher so that it has the same amount of water as the jar?
Level 2
Beaker A has 300 mℓ of water and Beaker B has 900 mℓ of water. How much water must be added into Beaker A so that it has the same volume as Beaker B?
Level 3
A chocolate bar cost $3 and a lollipop cost $2. Dave wanted to buy the same number of chocolates and lollipops. When he spends $12 on lollipops, how much did he spend on chocolates?