瞎虾瞎
幼苗
共回答了18个问题采纳率:94.4% 举报
12.5×8.2×8=12.5×8×8.2=100×8.2=820
0.23×1.4+0.23×8.6=0.23×(1.4+8.6)=0.23×10=2.3
0.125×(80+0.8)=0.125×80+0.125×0.8 =10+0.1=10.1
64.4-11.2-38.8=64.4-(11.2+38.8)=64.4-50 =14.4
0.4×0.16×2.5=0.4×2.5×0.16=1×0.16=0.16
1.63+19.9+0.37=1.63+0.37+19.9=2+19.9=21.9
6.3×99=6.3×(100-1)=6.3×100-6.3=630-6.3 =623.7
1.15×99×1.15=1.15×(99+1)=1.15×100=115
5.6×101=5.6×(100+1)=560+5.6=565.6
1年前
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