Multiply near 100
Practice Try the four moves

A preview

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Try the four moves

Use the scratchpad for your working. Wrong answers are useful here — read the reason and the solution after you submit.

Eight short questions on the four moves. Every wrong option tells you why it is wrong.

Try it as a guest
  • 8 questions
  • About 7 min
  • Not timed

You'll see why each answer is right or wrong after you submit.

A preview: nothing is recorded.
Next: Watch a teacher correct a journey