Word problems - part 1

A brick wall is 3m high and 9m tall. What is the area?

Smiggle only have 20 pens left, but they need 50 pens each for 10 people. How many more?

Max has 5 bars of chocolate, each with 20 pieces. He eats 5 pieces. How many are left?

Josef swims 11 laps of a 50m pool. How far has he swam?

Bob has 10 apple trees and each tree has 12 apples. How many apples does Bob have?