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9.Calculati: a)2×0,1×5; b) 5×2,7×2; c) 3,5×2×1,6×5; d) 4×5,34×25; e)6,24×25×0,7×4 f)2,5×3,14×2×0,2×5;​

Răspuns :

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A)2•0,1•5=
10•0,1=1

B)5•2,7•2
10•2,7=27

C)3,5•2•1,6•5=
7•1,6•5=
7•8=56

D)4•5,34•25=
100•5,34=534

E)6,24•24•25•0,7•4=
156•24•0,7•4=
3744•0,7•4=
2620,8•4=10483,2

F)2,5•3,14•2•0,2•5=
5•3,14•0,2•5=
5^2•3,14•0,2=
25•3,14•0,2=
5•3,14=15,7

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