cross multiplication


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cross multiplication

[¦krȯs ‚məl·tə·plə′kā·shən]
(mathematics)
Multiplication of the numerator of each of two fractions by the denominator of the other, as when eliminating fractions from an equation.
References in periodicals archive ?
When no integer multiples exist (type d) students often rely on either cross multiplication or an incorrect additive strategy (Cramer et al., 1993; Misailidou & Williams, 2003; Singh, 2000).
To solve it, you do cross multiplication. 60 (minutes in an hour) X 1.5 (miles of ditch) / 7 (minutes skating down ditch) = 12.857 miles per hour.
Calculation Method 1: Cross Multiplication Flour : 50 kg 100% Water : 30 kg 60% Salt : 1 kg S Flour : 50 kg 100% Water : 30 kg 60% Yeast : 0.75 kg Y Expressed as equations: