26 tháng 11 2023 lúc 20:02
\(4,86\cdot0,25\cdot40\)
\(=4,86\cdot\left(0,25\cdot40\right)\)
\(=4,86\cdot10=48,6\)
\(72,9\cdot99+72+0,9\)
\(=72,9\cdot99+72,9\)
\(=72,9\left(99+1\right)=72,9\cdot100=7290\)
\(0,125\cdot6,94\cdot80\)
\(=\left(0,125\cdot80\right)\cdot6,94\)
\(=6,94\cdot10=69,4\)
\(0,8\cdot96+1,6\cdot2\)
\(=1,6\cdot48+1,6\cdot2\)
\(=1,6\left(48+2\right)=1,6\cdot50=80\)
\(96,28\cdot3,527+3,527\cdot3,72\)
\(=3,527\left(96,28+3,72\right)\)
\(=3,527\cdot100=352,7\)
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