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12 cards from this deck
Mathematical rule showing relationship between quantities
Word formula and algebraic formula
Identify the quantities involved
Gets marks even if formula is wrong
Ensure all quantities use same units
T=25w+30T = 25w + 30T=25w+30 (TTT=time mins, www=weight kg)
P=6sP = 6sP=6s (PPP=perimeter, sss=side length)
C=80+0.5mC = 80 + 0.5mC=80+0.5m (CCC=cost £, mmm=miles)
More efficient for calculations
TTT for time, CCC for cost
Area or perimeter of shapes
Always state what each letter represents
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