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Fractions practice

Three-fraction addition or subtraction practice

Choose a three-term addition or subtraction lesson and keep the common-unit method consistent with the selected operation.

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Read the selected operation and every printed sign. Rename all three fractions with a common denominator, calculate the expression and simplify when requested. A subtraction expression is evaluated from left to right.

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Learning objective

What this activity builds

Coordinate equivalent fractions across three terms while distinguishing addition from successive subtraction.

Worked example

How do 3/4 + 1/2 + 1/8 and 3/4 - 1/2 - 1/8 differ?

Their values are 11/8 and 1/8 respectively.

Using eighths gives 6/8 + 4/8 + 1/8 = 11/8 for addition. For subtraction, 6/8 - 4/8 - 1/8 = 1/8. The fraction conversion is the same, but the operations produce different results.

Teaching notes

Make the practice count

  • Use separate addition and subtraction sets to compare strategies with otherwise similar fractions.
  • Ask learners to predict whether the result will grow or shrink before calculating.
  • Keep simplification instructions separate from the choice of operation.

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Configured PDF · Adding and Subtracting Three Fractions · US Letter

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Math SheetNameScoreTeacherDate/ 10Adding and Subtracting Three FractionsCombine three fractions with the selected operation. Simplify each answer to lowest terms.1.24+45+5102.45+610+123.34+12+344.23+35+125.110+12+356.12+110+127.23+12+148.13+15+259.45+12+1410.34+15+910math-sheet.comPage 1 / 1

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