Explicație pas cu pas:
[tex]2.3 \times 10 = 23 \\ ( - 4.2) \times 100 = - 420 \\ 3.1 \times ( - 1000) = - 3100 \\ ( - 0.3) \times ( - 100) = 30[/tex]
[tex]( - 100) \times ( - 1.002) = 100.2 \\ ( - 100) \times ( - 1.1121) = 111.21[/tex]
[tex]( - ) \times ( - ) = + \\ ( - ) \times ( + ) = - \\ ( + ) \times ( + ) = + [/tex]
