Num Drill for teachers

Free math-fact practice you can run as a classroom warm-up tomorrow — no student accounts, no install, no cost. Here's how to set up a class, link it from your LMS, and what it deliberately doesn't do.

Num Drill is a free math-fact practice tool that works in a classroom without accounts, installs, or a purchase order. A 10-question quiz takes a fluent student about 60–90 seconds, which makes it a workable bell-ringer or warm-up rather than something that eats a lesson. It runs in any modern browser, including school Chromebooks.

It is deliberately narrow: Num Drill drills facts so they become automatic. It does not teach concepts. If your students are meeting a topic for the first time, teach it first — then use this for the fluency reps.

What it covers

Seven operations — addition, subtraction, multiplication, division, percentages, pre-algebra, and fractions — each with six progressive levels. The levels run a little ahead of typical U.S. pacing, so a student working above grade level has somewhere to go. Rough grade fit is 2nd through 6th.

Set up a class in about three minutes

There are no student accounts to create and no roster to import. Each student gets a local profile — a name and an emoji — that lives in that browser’s storage.

1. Open the profile creator

   Go straight to the create-profile screen with this link:

   https://numdrill.com/app/#add-player

   Add one profile per student who will use that device. Names can be first-name-only or initials — whatever your school prefers.

2. Students tap their own name to switch

   The profile pill at the top of the screen switches everything — weak-fact tracking, personal bests, mastery grid — instantly. No password, no sign-in step.

3. Start practising

   From the home screen a student picks an operation and level and goes. Scores accumulate per profile on that device.

The 10-minute warm-up routine

The evidence on math-fact fluency points the same way as the evidence on most retrieval practice: short and frequent beats long and occasional. Ten minutes most days does more than an hour on Friday. A workable shape:

The adaptive weighting surfaces missed facts more often on later quizzes, so the re-run is not just repetition — it targets the wedge facts that student personally keeps dropping. More on the reasoning behind this on our methodology page, and a longer worked version in the 10-minute routine post.

Linking it from Canvas, Google Classroom, or Schoology

Teachers already do this, so here are the links that behave predictably when you paste them into an assignment or a course page:

Building an assignment link

Take numdrill.com/app/#quiz and add the skill and level you want:

A few worked examples you can paste straight into an assignment:

Times tables 1–10

numdrill.com/app/#quiz?skill=mul&level=2

20 addition facts

numdrill.com/app/#quiz?skill=add&level=1&count=20

Fractions with unlike denominators

numdrill.com/app/#quiz?skill=frc&level=3

If you mistype a link, the student sees a plain-English message saying what was wrong and can still pick a skill and level themselves — they never get silently dropped into the wrong drill. Worth clicking your own link once before you post it.

Printables for sub plans, centres, and homework

Every worksheet in the pack is a free PDF with the answer key on page 2, so a substitute or a parent can mark it without you. There are 39 sheets — addition and subtraction facts, times tables 2–12, division, fractions, percentages, multiplication and hundreds charts (filled and blank), number lines, and order-of-operations practice with a PEMDAS reference poster.

Browse them on the printable worksheets page. No email address, no sign-up wall, no watermark.

Student privacy

Schools have to ask this before anything else, so here is the specific answer rather than a reassuring adjective.

We do not ask for or collect student emails, addresses, birthdates, or parent contact information, and there is no account to create. The only identifier attached to a result is whatever display name a student typed into their local profile, which is why first-name-or-initials is a reasonable classroom convention.

Num Drill is free, has no paid tier, and shows no advertising. For the full data description, including the analytics and tag-manager scripts the site itself loads, see the parents and privacy page. If your district needs something specific in writing for a review, the fastest route is to send us the question directly.

What Num Drill does not do

Being clear about this saves you evaluating it for a job it will not do:

• No gradebook or teacher dashboard. Scores live on the student’s device. You cannot see a class view from your own machine.
• No roster sync, no SSO, no Clever or ClassLink. Profiles are created by hand, per device.
• No instruction. No lessons, videos, or worked explanations — it assumes the concept has been taught.
• No completion tracking. An assignment link sets the drill, but nothing reports back to you that a student did it.

What it does do is remove every barrier between a student and a minute of focused retrieval practice: no login, no load screen, no ads, no cost.

Quick links: printable worksheets · multiplication chart · number line · methodology & research · for parents · FAQ