资源描述:
6.5整数加法运算定律推广到小数1. 填空(1) 3.452.3415.663.45(2.3415.66),这是运用了( )(2) 2.832.681.172.831172.68,这是运用了( )(3) (4.212.5)7.5()(4) 28.46-7.4-2.628.46-(7.42.6)2.下面各题怎样简便就怎样算。61.46.323.6832.68-2.47-2.537.63-4.762.3713.70.981.026.315.247.594.7660.21-10.21-4.773.买这四样物品要多少钱附答案1.加法结合律 加法交换律 4.2(12.57.5) “”2.61.46.323.6832.68-2.47-2.537.63-4.762.3761.4(6.323.68)32.68-(2.472.53) 7.632.37-4.7661.410 32.68-5 10-4.7671.4 27.68 5.2413.70.981.026.315.247.594.7660.21-10.21-4.77(13.76.3)(0.981.02) 15.244.767.59 60.21-10.214.77202 207.59 504.7722 27.59 54.773.38.6072.5021.4087.50(38.6021.40)(72.5087.50)60160220元
展开阅读全文