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Maths World

Each one is a five-minute mystery. Start with any of them.

$Juice being measured and poured into a rocket-shaped dispenser$ Level 01 · CoreFractions · Unlike fractionsThe Moon-Juice Mix-UpA rocket recipe uses eighths and twelfths. Lumi makes the pieces the same size, then breaks it at the last step.Written by AI · checked twiceStart lesson

$Collectible cards being shared into four colorful prize boxes$ Level 02 · Warm-upMultiply & Divide · Division with remaindersThe Tournament Prize PacksSeven cards are left over, and Lumi stops. But one more full share is hiding in those seven.Written by AI · checked twiceStart lesson

$Lumi comparing two robot rescue routes with different battery costs$ Level 03 · StretchPercentages · Multi-step percentagesThe Robot RescueRita's robot starts with more battery. Does that mean it finishes with more?Written by AI · checked twiceStart lesson

$Two astronaut crews eating from the same pizza tray in sequence$ Level 04 · StretchFractions · Fractions of a remainderPizza Planet's Last TrayThe second crew eats a fraction of what is left, not of the whole tray. Lumi mixes them up.Written by AI · checked twiceStart lesson

Glowing wire being shared among seven star-shaped badge displays

Level 05 · CoreMultiply & Divide · Decimal divisionThe Star-Badge Supply DropLumi drops a decimal point and gives each badge display about ten times too much wire.Written by AI · checked twiceStart lesson

$Lumi inspecting an oxygen tank in an underwater station$ Level 06 · StretchBODMAS · BODMAS with decimalsThe Deep-Sea Robot DiveA dive, a refill, and a sum that has to be done in the right order.Written by AI · checked twiceStart lesson

$A friendly dragon and Lumi investigating a number vault$ Level 07 · StretchNumber Riddles · Constraint riddleThe Dragon Vault RiddleLumi finds the right two digits, then puts them in the wrong order.Written by AI · checked twiceStart lesson