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What belongs in each mystery box?

Every mystery box holds the same value. Make the two sides balance.

3 × ? + 428Equal values make a level balance.

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MathsAges 10-12Geometry
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Area of a triangle

A triangle has base 18 cm and perpendicular height 3 cm. Find its area.

Calculate the area of a triangle from its base and perpendicular height using A = ½bh.

18 cm · 3 cm · Area of a triangle
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Maths category

Featured, challenges & worksheets in Maths

FractionsFeatured

Fractions of a number

Find a fraction of a quantity, supported by a shaded equal-parts diagram.

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GeometryFeatured

Compound L-shape area

Partition an L-shaped rectilinear figure into two non-overlapping rectangles to calculate its total area.

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