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Year 7 maths · O.3 · Equations and Inequalities

Write and solve one-step equations from word problems

Write the story as an equation with a letter for the unknown number. Then undo the operation to find the value.

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  1. Diego had 50 beads. Then Diego bought 29 more. How many beads does Diego have now?

    Answer: 79 beads

  2. Hana had 40 library books and returned 11. How many library books are left?

    Answer: 29 library books

  3. Ava had 33 marbles. Then Ava won 34 more. How many marbles does Ava have now?

    Answer: 67 marbles

Tip: Write the story as an equation with a letter for the unknown number. Then undo the operation to find the value.

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