Help for teachers
Everything you need to make, review, save and reuse 99 Club worksheets. For normal use you only need the four main steps; the advanced rules are there when you want them.
Make a worksheet in four steps
Personalise the sheet
Add the school name, year group, class, teacher, date and optional logo. Leave any field blank if you do not want it printed.
Choose the challenge
Choose 11–99 Club or Bronze–Diamond. Classic 99 Club is selected when the page first opens.
Check the rules
Read the short summary. If it already matches what you need, leave it alone. Open Edit rules only when you want to customise the challenge.
Generate and download
Choose portrait or landscape, create one to four equivalent versions, review the questions and download the worksheet, answer key, or both.
Review the questions before you print
The preview is meant to be editable. If one question is not suitable, use the circular-arrow button beside it to replace just that question. On desktop the button appears when you move over the question; on a touch screen it stays visible.
You can replace the same question more than once. Studio remembers only the final reviewed worksheet for recreation purposes; it does not keep every discarded question in the QR code.
Shuffle questions changes the order without changing the challenge rules. If you later recreate the sheet using its Full recreation code or teacher QR, the final reviewed order is restored.
The level is shown by its achievement badge in the top-right of the sheet. The badge replaces the old repeated text title, so the worksheet stays cleaner while the child can still see immediately which stage they are working on.
The preview uses the same page layout routine as the downloaded PDF. Headers, QR panel, question positions, column spacing and footer therefore use the same A4 coordinates. A browser and a PDF viewer may anti-alias text slightly differently, but the page geometry is the same.
On a phone, Studio keeps the real page proportions instead of squeezing the worksheet into the screen width. The preview is shown at a readable size inside a horizontal scroller; swipe sideways to inspect the rest of a portrait or landscape page. Tap a question to reveal its ↻ replacement control.
Challenges and schemes
Schools use several versions of the 99 Club idea, so Studio provides presets rather than claiming that one progression is nationally official. Classic 99 Club is the standard starting scheme in this app.
Classic 99 Club
| Challenge | Default content |
|---|---|
| 11 Club | Doubling |
| 22 Club | Repeated addition |
| 33–66 Club | Progressively broader multiplication-table fluency |
| 77 Club | Division / inverse facts |
| 88–99 Club | Mixed multiplication and division |
Post-99 challenges
| Challenge | Core content |
|---|---|
| Bronze | Multiplication and exact division using all 1–12 tables |
| Silver | Addition, subtraction, multiplication and division |
| Gold | Silver content plus squares and exact square roots |
| Platinum | Gold content plus order of operations / brackets |
| Diamond | Platinum content plus scaled facts, fractions and percentages |
Named Bronze–Diamond challenges keep their defining core maths switched on. You can still change how often each type appears, adjust useful ranges and add optional advanced families. If you want a completely different structure, save it as a custom preset.
Alternative 11–99 schemes
The scheme menu also includes Addition-first, Arithmetic-first, Missing-number progression and Tables-first presets. Each scheme keeps its own edits, so experimenting with one does not change your Classic rules.
Changing the rules
Most teachers will rarely need every control. Studio only shows controls that are relevant to the selected challenge.
Question count and time
Change the number of questions, time limit or number of perfect attempts. The instruction printed on the pupil sheet updates automatically.
Tables and number ranges
For the 11–99 progression, choose the table families and relevant factor/quotient ranges. Bronze–Diamond use all 1–12 basic facts as fixed core content.
Missing numbers
Choose multiplication and/or division and where the blank may appear, for example 7 × □ = 42 or 42 ÷ □ = 7.
Powers and roots
Set the base ranges for squares, square roots and cubes. Square-root questions use exact whole-number roots.
Order of operations
Choose which operations may appear and whether brackets are used.
Scaled facts
Controls questions such as 6 × 70 or 4200 ÷ 60. These settings are separate from the basic 1–12 table facts.
Optional advanced families
Custom challenges can also use negative numbers, Roman numerals, angle facts and simple algebra.
Duplicate handling
Studio can avoid exact repeats and can treat reversed multiplication facts such as 3 × 7 and 7 × 3 as the same fact.
What does “weight” mean?
Weight controls frequency, not difficulty. A type with weight 4 is chosen about twice as often as a type with weight 2. The numbers do not need to add to 100.
In that example, division gets roughly half of the available questions, while addition and fractions each get roughly a quarter. Studio shows the approximate percentage and question count beside each weight.
The exact final counts can vary slightly because the total must be a whole number of questions and the generator also tries to keep the selection balanced.
Fractions and percentages
Fractions of quantities
The denominator buttons choose which denominator families may appear. Selecting denominator 5 can produce 1/5, 2/5, 3/5 or 4/5; it does not mean “1/5 only”.
The current fraction generator uses proper fractions, so the numerator is smaller than the denominator. It varies numerator, denominator and quantity automatically. Custom denominators can be entered as a comma-separated list such as 7, 9, 11, 15.
2/3 of 605/7 of 567/12 of 96Studio only uses combinations that give a whole-number answer.
Percentages of quantities
The standard buttons cover 5% steps from 5% to 100%. You can add other whole-number percentages, for example 37%, 42%, in the custom box. The % sign is optional when typing them.
37% of 200 = 7442% of 50 = 21As with fractions, Studio chooses suitable quantities so the generated answer is a whole number.
Saving, sharing and protecting your work
For everyday use, Studio saves automatically in your browser. You do not need to press Save after every change. Browser saving is convenient, but it is not an online account or cloud backup.
Save as reusable preset
Use this when you have a rule set you want to choose again, such as Year 6 Diamond – Autumn. The preset is saved in this browser.
Export this setup
Downloads one setup file. Use it to send one configuration to a colleague or archive one particular challenge without moving everything else.
Full browser backup
Downloads a safety copy of everything Studio has saved here: custom presets, challenge edits, current sheets, school details and logo.
Restore full backup
Use a Full backup to move all your Studio work to another browser/device or recover after site data has been cleared. Studio keeps a safety snapshot before restoring.
Which option should I use?
| I want to… | Use |
|---|---|
| Use the same custom rules next week | Save as reusable preset |
| Give one setup to another teacher | Export this setup |
| Make a safety copy before clearing browser data | Full browser backup |
| Move all my Studio work to a new computer | Full browser backup → Restore full backup |
| Return to one exact worksheet | Teacher QR or Full recreation code |
Recreate an exact worksheet
Sheet code
Every worksheet has a short code such as C99-G1-7FK2M9-A. It identifies the challenge, generation version, question seed and worksheet version. For a normal built-in preset, entering the code is the quickest way to regenerate the same questions.
If a code shows that edited/custom rules were used, Studio will not pretend the default rules are equivalent. Use the Full recreation code, teacher QR, or the saved setup so the correct rules travel with the sheet.
Full recreation code
This is a longer copy-and-paste code for one exact worksheet. It carries its rules and a compact description of the final reviewed question set/order. It is useful when you want to send an exact sheet digitally without sending a backup file.
Teacher QR
The answer-key PDF can include a QR. Scan it to open Studio and restore that exact reviewed sheet. The QR describes the current final sheet only; if you replaced Question 12 five times, the four discarded versions are not stored. Replaced questions are saved as compact numeric references rather than full question text, which keeps heavily reviewed sheets much easier to encode reliably.
The QR is only placed on teacher/answer copies. Pupil worksheets do not contain it. School name, teacher/class details and the logo are deliberately left out of the QR.
Common situations
“I use the same laptop every week.”
Do nothing special. Studio remembers your current settings automatically. Save a reusable preset only for rule sets you want to select by name later.
“I want my colleague to use my Year 6 Gold setup.”
Open that setup and choose Export this setup. Send the JSON file to your colleague; they import it without replacing their other saved Studio work.
“I am clearing browser data or changing computer.”
Download a Full browser backup first. On the new/clean browser choose Restore full backup and check your presets before deleting the original copy.
“I restored the wrong backup.”
Use Undo last restore. Studio keeps the browser state that existed immediately before a Full backup was restored.
“I found an old teacher answer sheet.”
Scan its QR. If it has no QR, enter the sheet code for a standard preset or use the Full recreation code if you archived it.
“I changed individual questions before printing.”
Keep the teacher answer PDF or copy the Full recreation code. Both restore the final reviewed worksheet, including replacements and shuffle order.
Privacy
99 Club Studio runs in your browser. School details, logos and questions are processed on the device rather than uploaded to Tech Tinker Club. The teacher QR uses the part of the web address after #, which is not sent to the website server.
A downloaded Full backup is an ordinary JSON file and may contain the school/class/teacher text and logo you entered. Store or share it as you would any other school working file.