Balance the Scale

Classes 6–9 · about 6 minutes · free, no sign-up

What you will learn

See an equation as a level scale, solve it by doing the same to both sides, and learn why you take away before you share.

Each purple box hides the same mystery number, x.
Take 1s off both sides, or share both sides into equal groups, until one box is alone.
Try taking 1 off one side only and watch the scale tip.
Solve x + 3 = 7, 2x = 10 and 2x + 1 = 9, then make your own equation.

Notes, practice questions and tests for the same topic:

Class 7 Maths NCERT chapters → Class 8 Maths NCERT chapters →

Cut a bar or a circle into equal parts, shade them, and see why 1/3 is bigger than 1/4.

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Rotate solids, count faces and edges, and unfold them into nets.

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