武徳 · Practice notes

Wude Training Guide

Small numbers. Steady rhythm. Build accuracy before speed.

Play Wude

Three useful techniques

Keep a running total

Replace the previous total with the new one each time a number appears. You do not need to remember the whole sequence.

7 → +5 → −3

Your total: 7 → 12 → 9

Practice: Start with three small numbers. Say only the current total silently, then enter the final total.

Make ten, then continue

Split an addition at the next ten. For subtraction, subtract a nearby round number and compensate.

8 + 7 = 8 + 2 + 5 = 15

23 − 9 = 23 − 10 + 1 = 14

Practice: Practise pairs that make ten: 1 + 9, 2 + 8, 3 + 7, 4 + 6 and 5 + 5. Then use them inside short series.

Separate tens and ones

When larger numbers arrive, break the new number into manageable parts rather than calculating every digit at once.

34 + 18 = 34 + 10 + 8 = 52

52 − 18 = 52 − 10 − 8 = 34

Practice: Try this slowly before shortening the display time. Choose the method that feels most reliable for that particular number.

A steady progression

Change one thing at a time

Begin with addition. Use short series and small numbers at a comfortable display time.
Introduce subtraction gently. Practise yellow-belt series separately before mixing plus and minus.
Build consistency. Repeat a setting until your answers feel reliable across several rounds, not just one lucky attempt.
Choose one challenge. Shorten the display time, increase the number size or add more numbers—not all three together.
Step back when needed. If you keep losing the total, return to a slower or shorter series. Pause when tired.

In Practice, keep Number size and Extra numbers at their starting values while learning a new operation. The countdown is light on dark; the light number screen marks the start of the calculation.

Another path

Soroban, mental abacus and flash anzan

Soroban is a physical abacus. With dedicated instruction and practice, learners can calculate using an imagined abacus. Flash anzan applies mental calculation to rapidly displayed numbers and is often practised using this trained mental-abacus technique.

You do not need to learn it to play Wude. Running totals are a straightforward starting point. If mental abacus interests you, learn bead values and basic operations on a real soroban with a structured course before attempting fast visualisation.

Research on mental-abacus instruction concerns that specific training, not Wude. These practice notes do not claim that Wude increases IQ or produces general cognitive improvements.