1、西师版四年级下册数学计算专项练习题1、直接写出得数。6.6+4.4 15.02+0.8 0.4 100 (254)(254)=24.60 7.07-0.7 0.8+0.2 254254=5.1100 931000 5110 3+153+15=25 12= 4540= 28040= 45-455=272.7= 6050= 13.17+6.33 = (45-45)5=4.6+4= 8-2.8= 13.27+0.3= 354+465=648-8= 44040= 6.78+0.23= 50-505=2、竖式计算(带*的要验算)。30-15.37 102.98= 26.1+48.93= 14.69+7.
2、01 49.5+36.58 24 108= *45.2-30.08= *4532 *45624 3、下面各题,能简算的要简算。2548 2.8+0.36+7.2+14.64 1254834122+7834 18.3-6.25-3.75 9899 3200254 25440 2544 2532125 25(4+32) 25432432-(49+32) 12588 67101-678.37+4.23+5.77+1.63 48125 9.4+3.7-7.4+2.317979-7979 (100-4)25 12125(1000-64)8 (125-10)8 172-43+28-577499+74 7200254 13789-893712428+476272 9999+999+99+9 35+3599 4435+5735-35 3625 78101 4.脱式计算。480+2014-280 348-48(32-24) 14627+46416457-(69+724) (36012)(120-84) 6.1-(2.2-0.25)98838-122 (48+84)(84-48) 21612(63-57)75+225157 300(200+2004) 242587673 9. 8+12. 82-8.17 76040-(12.7+5.63) 25180(154) 4