-37.5+25-(.30-7.5)+(-20) = ???? -47+ 80+(30+17)-60-20 = ? ?? (-4) x 100 x (0.25) x (0.01) = ??? 8 x (-25) x (-0.125) x 10 = ???
Mathématiques
asma15
Question
-37.5+25-(.30-7.5)+(-20) = ????
-47+ 80+(30+17)-60-20 = ? ??
(-4) x 100 x (0.25) x (0.01) = ???
8 x (-25) x (-0.125) x 10 = ???
-47+ 80+(30+17)-60-20 = ? ??
(-4) x 100 x (0.25) x (0.01) = ???
8 x (-25) x (-0.125) x 10 = ???
1 Réponse
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1. Réponse maudmarine
-37.5+25-(.30-7.5)+(-20)
= - 37,5 + 25 - 22,5 - 20
= - 37,5 - 22,5 - 20 + 25
= - 80 + 25
= - 55
-47+ 80+(30+17)-60-20
= - 47 + 80 + 47 - 60 - 20
= - 47 - 60 - 20 + 80 + 47
= - 127 + 127
= 0
(-4) x 100 x (0.25) x (0.01)
= - 400 x 0,0025
= - 1
8 x (-25) x (-0.125) x 10
= - 200 x - 1,25
= 250