35x28十70的简便方法 5.2x2.3十5.8x2.3一2.3的简便方法

5.2x2.3十5.8x2.3一2.3的简便方法  

5.2x2.3十5.8x2.3一2.3的简便方法

=2.3（5.2+5.8-1）
=2.3*10
=23

5.2x2.3十5.8x2.3一2.3简便演算法

5.2x2.3十5.8x2.3一2.3
=2.3×(5.2+5.8-1)
=2.3×10
=23

5.2x23十5.8x2.3一2.3简便方法怎么算

5.2x23+5.8x2.3-2.3
=52x2.3+5.8x2.3-1x2.3
=(52+5.8-1)x2.3
=56.8x2.3
=113.6+17.04
=130.64

5.2x2.3 5.8x23—2.3呢简算方法?

5.2x2.3+ 5.8x2.3—2.3
=(5.2+5.8-1)x2.3
=10x2.3
=23

5.2x2.3+5.8x2.3-2.3用简便方

=2.3×（5.2+5.8-1）
=2.3×10
=23

5.2x2.3 5.8x2.3-2.3的巧算

5.2x2.3+5.8x2.3-2.3
＝2.3×（5.2+5.8-1）
=2.3×10
=23

用简便方法计算728x2.3+2.3x27.2

用简便方法计算728x2.3+23x27.2
728x2.3+23x27.2
=2.3*（728+272）
=2.3*1000
=2300

7.28x23十2.3x27.2简便方法

原式
=23*（7.28+2.72）
=23*10
=230
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4.2x2.3÷0.35简便方法

4.2*2.3/0.35
=42/35*2.3
=6/5*2.3
=1.2*2.3
=2.76