October 2018 2 14 Report

Zad 13 str 30 . Klasa 6 podręcznik ..

Oblicz, starając się wykonać rachunki jak najsprytniej .

a) (-31) + (-15) + 18 + (-3) =

b) (-23) + (-36) + 40 + (-17)=

c) (-16) + 25 + 11 + (-20)=

d) (-64) + 45 + (-36) + 55=

e) (-52) + 47 + 15 + (-10)=

f) 142 + (-98) + 55 + (-99)=


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