October 2018 2 15 Report

Oblicz w pamięci:

a)

-12+(-11)=

-50+25=

-101+(-120)=

b)

-7+42=

-101+84=

-106+120=

c)

-16+3=

99+(-19)=

-27+31=

d)

-8(1/2)+6=

-3/4+(-3/4)=

-3(5/7)+3/7=

e)

-13+5,6=

-6,2+(-2,6)=

-0,75+(-1,3)=

f)

-2+1/2=

-0,5+1(1/2)=

0,75+(-3/4)=

Wyjaśnienie :

-8(1/2) - Osiem i jedna druga

Z góry dziekuje ;)


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