Effectuer mentalement chacun des calculs suivants.
\(\displaystyle{4\times 8,94\times 2,5}\)
\(\displaystyle{8\times 3,25\times 0,1}\)
\(\displaystyle{5,2\times 15\times 2}\)
\(\displaystyle{3,25\times 8\times 100}\)
\(\displaystyle{30,2\times 3\times 10}\)
\(\displaystyle{16\times 1,125\times 0,01}\)