Algebra Vocabulary

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Across
  1. 1. swapping a letter for a value
  2. 3. When we use letters to represent unknown values
  3. 6. a word in the sentence
  4. 7. work out the value of a letter
Down
  1. 2. a maths sentence that shows two sides are equal
  2. 4. like a mathematical sentence made up from symbols, letters and numbers
  3. 5. tidying up an expression and rewriting it