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Peabody TeachFor teachers and grown-ups

Random number generator, 1 to 100 v0.1.0

1 to 100 · 100 left
Hold Space or the button, then let go

The board: tap a number to mark it away today

The range and settings travel inside the link after the # sign, which browsers never send to any server. Numbers marked away are not included.

Space hold to roll, let go to land · 1–4 mode · R reset · S say it · M sound · F full screen · Esc leave it

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A random number generator for 1 to 100, with every number equally likely. Draw one number or several, with or without repeats, and see them large on the projector.

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How to use it

  1. The range is already set from 1 to 100. Press Hold to roll or the Space bar, and let go to land on a number.
  2. No repeats is on, so each number comes up once until all have been used. Untick it to allow repeats.
  3. For another range, type the lowest and highest numbers in the boxes, or open the full random number generator for odd, even, multiples and more.

Ideas for class

  • Hunt for the number on a hundreds chart: draw a number and ask children to find it, then say what is just above and below.
  • Round the number to the nearest ten, then to the nearest five, and compare the answers with a partner.
  • Play guess my number: draw one in secret and let the class guess, with the arrow saying higher or lower after each guess.
  • Draw a number and ask for it in words, as tens and ones, and as a sum of two numbers that add up to it.

Related

Questions

Can I pick several numbers from 1 to 100 at once?

Yes. Set How many, up to 10 a draw, and press the button. Tick No repeats if you want all of them different, which is useful for choosing groups, teams or winners.

Does every number from 1 to 100 have the same chance?

Yes. The number is drawn first, with your browser's secure random generator, so 1 is as likely as 100. The reels only show the result and never change it.

How do I stop a number coming up twice?

No repeats is already on for this page. Each number comes up once until all hundred have been used, and the board shows the ones gone. Reset puts all of them back.

Nothing you do here is sent to us. Names, lists and settings stay in this browser. No sign-in, no ads. What each tool stores