Write a number in each box to make the calculation correct.
0000−9=16\boxed{\phantom{0000}} - 9 = 160000−9=16
21=6+000021 = 6 + \boxed{\phantom{0000}}21=6+0000
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.