Question

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Answer 1

$\bold{a)} \ -1,5+3+1+0,5=\boxed{3};\\ \bold{b)} \ 1 \cdot 0,450001 \cdot 13,(3) \ =\boxed{6}; \\ \bold{c)} \ 1. \ 82; \\ 2. \ 64; \\ 3. \ 28; \\ 46.$