1、题型突破卷3计算题（一）专项1：计算器1用计算器计算。7893456809785345437786548786897520887678697689663960603512(456788765)8396824991988495(226229)2用计算器探索规律。(1)先用计算器计算，找出规律，再直接写出得数。99911()99912()99913()直接写出得数：99914()99917()99919()(2)根据规律填空。09889978898968889879588889876948888898765938888889876549()()9876543()()()()()0()专项2：口算3
2、含有字母的式子的简写。4abbc9 (xy)83ab7xy94mmyx64化简含有字母的式子。2x5x9x3x7a4a8yy10x2x9c8cbbbb100x82x8x5加法运算律和减法的运算性质中的口算。364555231617632537125(2550)258875187257553(2847)25028226乘法运算律和除法的运算性质中的口算。9125825374(257)456127562735(27)4925900254540363411161125(84)7小数点的位置移动中的口算。4.52108.971000.09810012102.003100020.521000.28101
3、001.710010000.54100108小数加减法中的口算。70.70.90.80.61.20.7914.60.348.243.761.38.564.13.80.80.552.10.22.130.020.30.73.510.27.50.510.20.31.121.023.70.95.64.64.50.01专项3：竖式计算9小数的加法。6.622.3813.724.2815.69.4710.3676.82.49.214.8510小数的减法。8.766.8423.52.85203.657.656.9答案1424563506515076569868191183758170943295304345
4、7386102(1)109891198812987139861698318981(2)28888888918888888898765432988888888834ab29c8(xy)3ab7x9y4m2y6x47x6x3a9y8xc4b26x51365612550188871282006900037001285600490900915550300745.28979.81.220030.2052280175.4871.61.41.9914.26129.860.30.252.32.1113.71710.50.12.810.24.4996.622.38913.724.281815.69.4725.07 10.3616.376.82.479.2 9.214.8524.05108.766.841.92 23.52.8520.65203.6516.35 7.656.90.75
