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Math riddle lock

A math riddle whose answer is a four-digit code: hours in a day times minutes in an hour, plus the players in a football team, minus a spider's legs. It is a five-minute warm-up for the start of a math lesson, on the class screen or on phones, and you can play it right now. The template is free: it publishes as it is on the free plan, players open a link without signing up, and the lock never expires.

Made for
Teachers and classrooms
Difficulty
Easy
Duration
5 min
Steps
1
Locks used
Numeric code
Play the example
Math riddle lock: Numeric code

Try it before you copy it

What this template contains

  1. step 1 · Numeric code

    The four-digit code

    ⏰ Multiply the number of hours in a day by the number of minutes in an hour.
    ⚽ Add the number of players in a football team.
    🕷️ Take away the number of legs on a spider.

    🔢 Four digits.

Ideas to make it yours

  • Make the code the page number of today's exercises
  • Rewrite the chain with the numbers of your school: classrooms, pupils, floors
  • Run it as a math escape room warm-up: two halves of the class race on two phones

How to use this template

  1. 1

    Play it here first, exactly as your players will.

  2. 2

    Copy it into the builder, then change the codes, the clues and the reward.

  3. 3

    Publish and share the link or the QR code. Players need no app and no account.

Open it in the builder →

Questions about this template

What is a good math riddle for the start of a lesson?
A chain of small sums that ends in a code works well: hours in a day times minutes in an hour, plus a football team, minus a spider's legs gives 24 x 60 + 11 - 8. Pupils from about nine solve it in their heads or on paper, and the hint lists the three operations in order.
Can I write my own math riddle and answer?
Yes. The riddle is plain text and the answer is any code of the length you choose, so the chain can land on today's date, a page number or the answer to last week's homework. The hint and the wrong-answer message are yours to write too.
Is this math riddle lock free?
Yes. It is a basic lock with a riddle, a hint, your own wrong-answer line and a designed reveal, with no theme or animation. A free account publishes it exactly as it is, players need no account to open the link, and it never expires.
Is this template free?
Yes. Playing it, copying it and publishing it cost nothing, and a free lock never expires.
Can I change the answers and the texts?
Yes. Every code, clue, hint and reward opens in the builder, and nothing is saved until you publish.
What do players need?
A phone or a computer with a browser. They open your link or scan your QR code, and never create an account.
How long does it take to play?
About 5 minutes, from the first lock to the reward.

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