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Tuesday, July 9, 2013

Fractions

I am able to resolve fraction strategies in level 3.


A farmer is selling some of his animals.
1.  The farmer sells ¼ of his 72 cows.  Show how to work out how many cows he sells.


4 x 18 = ?
2 x 18 = ?
2 x 10 = 20
2 x 8 = 16  
20 + 16 = 36
1/2 of 36 is 18
36 doubled is 72


Another way
72 divided by 4 = 18


1/4 of 72 = 18



2. He sells ⅓ of his 45 pigs.  Show how to work out how many pigs he sells.


45 divided by 3 = 15


Another way
One third of 45 is 15



3.   He sells ⅙ of his 84 sheep.  Show how to work out how many sheep he sells.


84 divided by 6 = 14


Another way
6 x 14 = 84


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