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→The Fraction abacus
If using just one string, only some of the strings of beads can be used to make 1/2. Which ones? Why?
If using just one string, only some of the strings of beads can be used to make 1/2. Which ones? Why?
To show that the solutions which use more than one string are correct, use the Lowest Common Denominator (LCM) method, for example for the case of 1/3 +1/6 = 1/2
1/3 + 1/6 =
2/6 + 1/6 =
(2+1)/6 =
3/6 =
1/2
How do you know if you have found all the solutions?
How do you know if you have found all the solutions?