October 2018 1 22 Report

1. Oblicz:

a) -(2 1-1 1) + 3,5 - 2 2=

2 3 5

b)4 1-7,5 - (-2 1+5,2)

3 2

2. Do każdych z podanych liczb napisz liczbę odwrotną .

2=

-5=

-2,5=

1

7=

- 2

9=

-3 1

2

4 2

3

-12 1

3


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