90乘以33加上11乘以30怎样用简单方法计算?
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答案3300,简便计算: 90x33+11x30 =90x33+11x3x10 =90x33+33x10 =33x(90+10) =33x100 =3300
咨询记录 · 回答于2022-10-26
90乘以33加上11乘以30怎样用简单方法计算?
答案3300,简便计算: 90x33+11x30 =90x33+11x3x10 =90x33+33x10 =33x(90+10) =33x100 =3300
答案3300,简便计算: 90x33+11x30 =90x33+11x3x10 =90x33+33x10 =33x(90+10) =33x100 =3300
78╳450十55㐅78
应该是78x45+55x78吧
同学,你看下题目
121224Ⅹ46十188㐅
不是78x450
是不是78x45+55x78吧
24X46十108X12
72X22十ⅡX56
24X46十108X12 =12x2x96+108x12 =12x92+108x12 =12x(92+108) =12x200 =2400
78x450十55X780
72X22十ⅡX56 =72x22+11x2x28 =72x22+22x28 =22x(72+28) =22x100 =2200
78x450十55X780 =78x450+78x10x55 =78x450+78x550 =78x(450+550) =78x1000 =78000
72x22十11x56
72X22十ⅡX56 =72x22+11x2x28 =72x22+22x28 =22x(72+28) =22x100 =2200
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