What’s on the Rearranging Formulas poster
The rule, 4 worked examples.
- Rearranging a formula uses exactly the same inverse operations as solving an equation…
- A = lw → l = A/w
- A = lw, solve for l = l = A/w
- P = 2l + 2w, solve for w = w = (P − 2l)/2
- y = mx + b, solve for m = m = (y − b)/x
- C = 2πr, solve for r = r = C/(2π)
Isolate the letter you want. Everything else stays exactly where the algebra puts it.
Questions about the Rearranging Formulas poster
- What’s on the Rearranging Formulas poster?
- The rule, 4 worked examples. Rearranging a formula uses exactly the same inverse operations as solving an equation…; A = lw → l = A/w; A = lw, solve for l = l = A/w; P = 2l + 2w, solve for w = w = (P − 2l)/2; y = mx + b, solve for m = m = (y − b)/x; C = 2πr, solve for r = r = C/(2π). Isolate the letter you want. Everything else stays exactly where the algebra puts it.
- Who is the Rearranging Formulas poster for?
- Rearranging Formulas is filed under 9th Grade (ages 14–15), so it matches what that year asks a child to remember. It is equally useful to an older student revisiting math, and to the parent or teacher answering the question at the kitchen table.
- When should you use the Rearranging Formulas poster?
- Treat every other letter as a number. The steps are identical. A wall chart earns its place by being glanceable from where the work is happening, so Rearranging Formulas belongs on the wall where that math work actually happens, within glancing distance, rather than filed away.
- What other posters go with Rearranging Formulas?
- Absolute Value Equations, Arithmetic Sequences and Difference of Squares sit alongside Rearranging Formulas in the 9th Grade set. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Absolute Value EquationsArithmetic SequencesDifference of Squares
- Is the Rearranging Formulas poster free to download and print?
- Yes. Rearranging Formulas downloads as a free PDF with no account, no email and no watermark, like everything else in the 9th Grade set. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Rearranging Formulas poster print at?
- Rearranging Formulas is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Rearranging Formulas loses nothing.Printing guide
Related posters
Charts that sit alongside Rearranging Formulas on the same wall.
Browse every 9th Grade poster, or start from the full catalogue.