Fraction Blueprint Anchor Chart
Fraction Blueprint
Resource Binder | 04
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Date:
The Golden Rule
"Whatever you do to the numerator, you MUST do to the denominator!"
1
Strategy: Finding the L.C.M.
1
Find the Least Common Multiple (LCM) of the denominators.
2
Multiply to create equivalent fractions with the same bottom number.
3
Add or Subtract the top numbers (numerators) only.
4
Keep the bottom number (denominator) the same.
Addition Practice
1
4
1
3
=
List multiples & solve...
Subtraction Practice
5
6
-
1
2
=
List multiples & solve...
2
Strategy: The Butterfly
1
Draw diagonal wings to connect the opposite numbers.
2
Multiply inside each wing; write totals at the top.
3
Multiply the bottom numbers for the new denominator.
4
Add or Subtract top totals for the new numerator.
Addition Practice
2
3
1
5
=
Cross-multiply & solve...
Subtraction Practice
3
4
-
1
6
=
Cross-multiply & solve...
Verification Checklist
Blueprint 04
Found common denominator?
Denominator stayed the same?
Simplified (reduced) the result?
Check mixed number format?