Write a number in each box to make the calculation correct.
0000+7=18\boxed{\phantom{0000}} + 7 = 180000+7=18
21=26−000021 = 26 - \boxed{\phantom{0000}}21=26−0000
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.