Write a number in each box to make the calculation correct.
15−0000=415 - \boxed{\phantom{0000}} = 415−0000=4
9+0000=169 + \boxed{\phantom{0000}} = 169+0000=16
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.