簡便:20.88÷7.2+6.8 9.66+3.65-2.66+0.35 1.25x4.85x0 簡便: 20.88÷7.2+6.8 9.66+3.65-2.66+0.35 1.25x4.85x0.8 20.3-1.3×5-3.5

簡便:20.88÷7.2+6.8 9.66+3.65-2.66+0.35 1.25x4.85x0 簡便: 20.88÷7.2+6.8 9.66+3.65-2.66+0.35 1.25x4.85x0.8 20.3-1.3×5-3.5

20.88/72.+6.8=2.9+6.8=9.7
9.66-2.66+3.65+0.35=7+4=11
1.25*4.85*0.8=1.25x0.8x4.85=4.85
20.3-1.3x5-3.5=20.3+(1.3x5+3.5)=20.3-10=10.3