mentalmath.lol

Arcade

Three worlds, eighteen stages. Clear a stage to open the next one; earn stars to open a world.

0stars
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Foundations

Adding and subtracting, one digit at a time.

0/18
  1. Stage 1Warm up · 10 problems
  2. Stage 2Clear the stage before it
  3. Stage 3Clear the stage before it
  4. Stage 4Clear the stage before it
  5. Stage 5Clear the stage before it
  6. Stage 6Clear the stage before it

Carrying

Two digits, and the borrow that comes with them.

Needs 8 ★
  1. Stage 1Clear the stage before it
  2. Stage 2Clear the stage before it
  3. Stage 3Clear the stage before it
  4. Stage 4Clear the stage before it
  5. Stage 5Clear the stage before it
  6. Stage 6Clear the stage before it

Tables

Times and divides, ending on all four together.

Needs 20 ★
  1. Stage 1Clear the stage before it
  2. Stage 2Clear the stage before it
  3. Stage 3Clear the stage before it
  4. Stage 4Clear the stage before it
  5. Stage 5Clear the stage before it
  6. Stage 6Clear the stage before it

Stars come from anywhere: three for a gold daily run, one for every hundred correct answers you practise. Play today's challenge