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Published byJune Harper Modified over 8 years ago
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Adding and Subtracting Fractions bottom numbers same
3 Add the top numbers 5 2 fifths PLUS 1 fifth = 3 fifths ÷ 2 6 3 Subtract the top numbers Simplify answer = 8 4 7 eighths MINUS 1 eighth = 6 eighths
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Adding and Subtracting Fractions bottom numbers same
Add the top numbers Always simplify answer if possible Subtract the top numbers
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Adding and Subtracting Fractions bottom numbers different 10 3 2 3
2 x 5 3 x 1 10 3 2 3 6x table 6 12 4x table 4 8 12 How many? How many? Find the LCM Re-write the fractions How many ? then multiply Calculate answer Simplify if possible
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Adding and Subtracting Fractions bottom numbers different
Find the LCM Re-write the fractions How many ? then multiply Calculate answer
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Multiplying Fractions 3 10 1 2 Cross-cancel if possible
Multiply tops Multiply bottoms Simplify if possible 1 3 10 2
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Multiplying Fractions
Cross-cancel if possible Multiply tops Multiply bottoms Simplify if possible
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MUST re-write the question
Dividing Fractions MUST re-write the question Write down the first fraction Change ÷ to x Invert the second fraction Cross-cancel if possible Multiply tops Multiply bottoms Simplify if possible 3 27 x 28 4
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MUST re-write the question
Dividing Fractions MUST re-write the question Write down the first fraction Change ÷ to x Invert the second fraction Cross-cancel if possible Multiply tops Multiply bottoms Simplify if possible
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Change mixed numbers into top-heavy fractions
Multiplying Fractions working with mixed numbers Change mixed numbers into top-heavy fractions Cross-cancel if possible Multiply tops Multiply bottoms Simplify if possible 2 x 8 plus 5 2 x 9 plus 2 5 7 35 6 3 2
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Dividing Fractions working with mixed numbers
Change mixed numbers into top-heavy fractions MUST re-write the question Write down the first fraction Change ÷ to x Invert the second fraction Cross-cancel if possible Multiply tops Multiply bottoms Simplify if possible
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Adding Fractions working with mixed numbers
3 + 2 = 5 12 15 4 5 Add the whole numbers Add the fractions find LCM how many .... ? multiply Calculate answer Simplify if possible Combine answers How many? How many?
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Adding Fractions working with mixed numbers
Add the whole numbers Add the fractions find LCM how many .... ? multiply Calculate answer Simplify if possible Combine answers
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Subtracting Fractions working with mixed numbers
plus 1 164 70 4 10 Change to top heavy fractions Find LCM Re-write the fractions How many .... ? then multiply Calculate answer Simplify if possible How many? How many?
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Subtracting Fractions working with mixed numbers
Change to top heavy fractions Find LCM Re-write the fractions How many .... ? then multiply Calculate answer Simplify if possible
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Fraction OF 60 £60 1 20 1 Replace of with x Cross-cancel if possible
Multiply tops Multiply bottoms Simplify if possible 60 £60 1 Remember £ sign 1
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Fraction OF Replace of with x Cross-cancel if possible Multiply tops
Multiply bottoms Simplify if possible Remember £ sign
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