1
Read the shape
Name the visible trick before solving. Near-100 mul (both above).
Level 11 - build-up
6 visual blocks - recognize the shape
Name the visible trick before solving. Near-100 mul (both above).
Match the shortcut to the number shape.
Check for x11, near-base, x25, or x125.
Use an estimate to catch bad padding.
Beat the clock with checked answers.
One trick per problem; do not mix rules.
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