Middle School Math Sub Plans for Percents and Ratios

A sub who teaches French is handed a class of seventh graders and a stack of percent problems, and a student asks whether $31.69 is the right total for a backpack and a binder on sale, plus tax. With this packet the sub finds the answer in the key, sees the steps, and can tell the student which line of the worked example to read again, without ever having taught a percent.

It is three days of practice, not new teaching, for a class that has already met percents, ratios and unit rates. Each day is built to be run from the page: a one-page script with minutes that add up to 45, a worked example at the top of the first student page, three student pages, an exit ticket page that tears along a dashed line (the early finisher section stays with the student), and a two-page answer key with the steps and the most common slip for every problem.

What is inside (26 pages):
- Three opening pages: a read-first page, a plan page with copy counts and spaces for your calculator rule, your helper, and your school's own procedures, and a one-page method card for students that includes the rounding rules and a stuck-student path
- Day 1, best buy: two invented grocery flyers, twelve unit prices, six head-to-head comparisons with the percent cheaper, and four shopping and rate problems (rice for a food drive, granola bars for a party, typing speed, a tap filling a tank)
- Day 2, sales and tax: an invented school-supply flyer, eight discounts and sale prices, six what-percent problems, and five receipts with an example tax rate
- Day 3, recipes and mixes: pancakes and trail mix to scale up and down, ratio tables, paint, lemonade and punch mixes, and a map scale. Paper math only: nothing is cooked or tasted
- A check-off sheet for exit tickets (27 students to a sheet) and a return note for the sub to fill in
- 66 problems in all, each with a full answer in the key

Every answer was calculated by script and again by a different route (a sale price found as the original minus the discount and as a percent of the original, for example), then recomputed from the numbers printed in the finished PDF. The rounding rules are printed on every student page and applied the same way in the key. The stores and prices are invented, and the 8% tax rate is an example, not any state's law. The topics are the usual seventh-grade ones but are not matched to any state's standards or your district's pacing guide.

It is a fillable PDF with 308 form fields on 13 of its 26 pages, plus a print version of the same 26 pages. Both come in the zip. The fields are the answer boxes, the plan page, the check-off sheet and the return note; the flyers, scripts and keys are made for printing.

Student first names or initials go on the student pages, the check-off sheet and the return note. Use first names or initials, and follow your district's rules on what can be left for a substitute.

Made with AI assistance, then checked page by page.

Made by Made for This Day — we wrote it, we sell it, and we answer for it.

Instant digital download. Nothing is posted to you — the file is yours the moment you pay, and you can print it as many times as you like.