The subject and the balance method
The subject and the balance method
A formula connects variables, and the subject is the letter that already stands alone on one side of the equals sign. In the formula A=lwA = lwA=lw, the subject is AAA.
The subject and the balance method
The subject and the balance method
A formula connects variables, and the subject is the letter that already stands alone on one side of the equals sign. In the formula A=lwA = lwA=lw, the subject is AAA.
Step-by-step lessons covering Edexcel GCSE Maths Changing the Subject of a Formula for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build fluency with number, ratio and algebra first, since geometry, probability and statistics topics rely on them, and leave extra time nearer the exam for Higher-tier problem-solving and multi-step reasoning questions.