用简便计算 2.82*2.7+7.18*2.7= 1.25*0.25*3.2= 24*10.2= 5.7*99+5.7 用竖式解答,
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![用简便计算 2.82*2.7+7.18*2.7= 1.25*0.25*3.2= 24*10.2= 5.7*99+5.7 用竖式解答,](/uploads/image/z/13632623-71-3.jpg?t=%E7%94%A8%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97+2.82%2A2.7%2B7.18%2A2.7%3D+1.25%2A0.25%2A3.2%3D+24%2A10.2%3D+5.7%2A99%2B5.7+%E7%94%A8%E7%AB%96%E5%BC%8F%E8%A7%A3%E7%AD%94%2C)
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用简便计算 2.82*2.7+7.18*2.7= 1.25*0.25*3.2= 24*10.2= 5.7*99+5.7 用竖式解答,
用简便计算 2.82*2.7+7.18*2.7= 1.25*0.25*3.2= 24*10.2= 5.7*99+5.7 用竖式解答,
用简便计算 2.82*2.7+7.18*2.7= 1.25*0.25*3.2= 24*10.2= 5.7*99+5.7 用竖式解答,
这货太懒了.
1、提取公因数出来
2、变拆为便计算为整十、百、千