Level 3 · Mathematics M3.8
Letters for numbers and simple equations
Use letters to stand for numbers, tidy up expressions, and solve simple equations.
Start with a box of beans and write what you do not know as a letter. Put numbers in, collect like terms, use brackets, and keep a balance level to solve equations. Then write your own equations and find the rule of a sequence.
8 chapters. Your place is kept on this device only.
You are ready for this book if
You can work out 3 + 4 × 2 in the right order.
- One step up M4.8 Linear and simultaneous equations
- This book M3.8 Letters for numbers and simple equations
- One step down M2.8 Patterns and rules
Contents
- 1Letters for unknown numbers, readunderstood
- 2Putting numbers in, readunderstood
- 3Collecting like terms, readunderstood
- 4Brackets, readunderstood
- 5Solving equations in one step, readunderstood
- 6Solving equations in two steps, readunderstood
- 7Writing your own equations, readunderstood
- 8Sequences and the nth term, readunderstood
Keep it, print it, pass it on
- One file for any phone
850 KB. Opens with no internet. Share it with anyone. - PDF to print
879 KB, 93 A4 pages. Answers at the back. Copies well in black and white. - EPUB for reading apps
125 KB. For e-readers and book apps.
For parents and teachers
For learners who can work out 3 + 4 × 2 in the right order. In many schools this fits children of about 11 to 13, and older learners who never met letters in mathematics can start here too. Every new step is shown as a picture before it is written with letters. Each chapter takes one or two short sessions. A learner can work alone: every exercise has its answer and the reason for it. Each chapter also has a short page for the adult, with three questions to ask.
Strand: Algebra. Written and drawn by attnom. Free to read, print and share.