Write a number in each box to make the calculation correct.
5+0000=185 + \boxed{\phantom{0000}} = 185+0000=18
20−0000=1220 - \boxed{\phantom{0000}} = 1220−0000=12
242 exam-style questions on OCR GCSE Maths Solving One Step Equations. Each one has a worked solution and a mark scheme showing where the marks go.