Calcule
A)3/4 - 1/2
B)3/8 + 3/2
C)3/5 + 3/4 + 3/10
D)8/5 - 1/4 - 3/10
Soluções para a tarefa
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3/4 - 1/2 = 3/4 - 2/4 = 1/4
3/8 + 5/2 = 3/8 + 20/8 = 23/8
3/5 + 3/4 + 3/10 = 12/20 + 15/20 + 6/20 = 33/20
8/5 - 1/4 - 3/10 = 32/20 - 5/20 - 6/20 = 21/20
3/8 + 5/2 = 3/8 + 20/8 = 23/8
3/5 + 3/4 + 3/10 = 12/20 + 15/20 + 6/20 = 33/20
8/5 - 1/4 - 3/10 = 32/20 - 5/20 - 6/20 = 21/20
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