Decimals · percent · speed · area and volume
📐 Fifth-grade Maths
The car drives at the speed you just worked out, the decimal point hops place by place, and a glass box fills with centimetre cubes.
Tap the card holding the answer. A miss never turns red: the card wobbles and the page draws the method instead. The number line zooms into the gap between two decimals, the decimal point hops one place per step, a hundred-square grid lights up the percentage, two equal triangles join up and are cut into a rectangle, and centimetre cubes fill the box layer by layer. Drag the dot on the circle to change the radius and get a fresh question. Five right in a row earns a star.