Dylan is out shopping, and needs to buy a new bottle of washing detergent. The two sizes available are $2$2 L and $5$5 L.
How much more does the second bottle contain than the first?
Bianca notices that her car has only $9$9 L of fuel left in the tank. She goes to a gas station and fills it by adding another $51$51 L.
What is the total size of her car's fuel tank?
A particular recipe calls for $500$500 grams of flour and $250$250 grams of sugar.
What is the combined mass of these ingredients?
Irene buys a $5$5 kg bag of rice, and uses $1$1 kg that evening.
How much rice is left?