Wednesday, 24 July 2019 Fractions

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Presentation transcript:

Wednesday, 24 July 2019 Fractions Evaluate 3/4 + 1/5 2/3 – 1/5 3/4 X 1/5 1/5 ÷ 3/4 Wednesday, 24 July 2019 Fractions

Fractions can only be added or subtracted if the numerators are the same. + + = 3/5 + 1/5 = 4/5 Common numerator

Fractions can only be added or subtracted if the numerators are the same. – – = 3/5 – 1/5 = 2/5 Common numerator

+ 1/4 1/3 + = ? 1/4 1/3 1/3 1/4 = + 3/12 + 4/12 = 7/12

1/3 1/4 3/12 + 8/12 = 11/12 + = 1/4 + 2/3 = ? 1 X 3 4 X 2 11 + = 3 + 8 = 4 X 3 4 X 3 12 12 12

1/4 + 2/3 = ? 3 X 1 4 X 2 + 4 X 3 4 X 3 3 8 11 + = 12 12 12