8.43×1/4+84.3×0.05+2.5×0.843
=8.43x0.25+8.43x0.5+8.43x0.25
=8.43x(0/25+0.5+0.25)
=8.43x1
=8.43
3.14平方+68.6×0.314
=3.14平方+6.86x3.14
=3.14x(3.14+6.86)
=3.14x10
=31.4
8.43×1/4+84.3×0.05+2.5×0.843 3.14平方+68.6×0.314
1个回答
相关问题
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3.14×43＋7.2×31.4－150×0.314=
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简便运算 3.14×11/8 +0.314×25/4 -31.4×0.2
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直接写得数． 0.8×6= 0.05×1.6= 2.5×5= 8÷0.5= 1.4×0.03= 12×0.5×0.2=
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直接写出得数．0.07×0.8=0.16×0.5=0÷3.68=2.5×8=2.33×0.2×5=4.2÷0.7=3.6
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利用因式分解计算32×3.14+5.4×31.4+0.14×314=______．
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3.14×0.68+31.4×0.032．
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直接写出得数．5.43+1.07= 3.05×0.4= 0.46÷4.6= 3.7-2.9= 0.8×1.25= 0.2
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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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用简便方法计算下面各题． 1.8×0.9+0.18 5.4×0.68+3.4×2×0.46 23.9-0.6×0.6-0
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用简便方法计算下面各题． 1.8×0.9+0.18 5.4×0.68+3.4×2×0.46 23.9-0.6×0.6-0