Solve problems with or without a calculator Level 4

Find the value of y when x = 3. y = 2x + 3 y = x - 1. x x +1. Simplify p=x+x+y+y. Write p = 2(x+y) as p=2x+2y. Give pupils three sets of cards: the first with formulae in words, the second with the same formulae but expressed algebraically, the third with a range of calculations that match the formulae (more than one for each). ................
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