September 2018 2 13 Report

1.Oblicz w pamięci :

1 1/2 (jeden i jedna druga) + 1/4(jedna czwarta)

3 3/4 (trzy i trzy czwarte) - 1/2(jedna druga)

10 3/4 - 2 1/2 =

5 1/4 + 3 1/2


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