、(0.5+2.5)×( 4 )=( 0.5 )×( 4)+ ( 2.5 )×42.(0.125×7.9)×( 0.8 )=(( 0.125 )×0.8 )× ( 7.9 ) 注:圆圈里是填符号3 0.99×4.8=(1-0.01)×4.8=1×4.8-0.01×4.8=4.752【递等式巧算】 38...
1、(0.5+2.5)×( )=( )×( )O ( )×4
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相关问题
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直接写出得数0.20×25=1.4×3=0.7×0.5=4.5×0.2=1.5×0.6=0.8×5=2.4×3=5×0.
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0×1×2×3+1=1=1^2 1×2×3×4+1=25=5^2 2×3×4×5+1=121=11^2 3×4×5×6+
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0×1×2×3+1=1=1²;1×2×3×4+1=25=5²;2×3×4×5+1=121=11
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(-4)×5/6×(-1.2)×(-0.
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用简便方法计算下面各题. ①4.8×0.25 ②2.33×0.5×4 ③1.5×105 ④1.2×2.5+0.8×2.5
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(0.36×5.1×81)÷(o.17×8.1×0.4),怎样计算
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1×2/1+1×2×3/2+1×2×3×4/3+1×2×3×4×5/4+1×2×3×4×5×6/5等于多少啊
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填>,<或= 7.02×0.7______7.02 5.1×2.4______5.1 4.5×0.9______4.5×
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2.5×5= 10+0.4= 2.5×0.4= 7.1×0.2= 1÷0.1= 3.6÷0.4= 0.2×3.1= 4.
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2.5×5= 10+0.4= 2.5×0.4= 7.1×0.2= 1÷0.1= 3.6÷0.4= 0.2×3.1= 4.