1、 91.05 30015=0.05 1460=5400600= 345+298=0.5+0.4= 0.9-0.3=0.35+0.43= 2.8-1.2=0.81-0.19= 9.7-7=7.8+2.2= 1-0.37=4(25+50)= 32.819=10000.8=3.060.2=3100.5117= 24030= 8125= 0.671.24=76.28= 8.20.01= 9923= 504= 5 0.429.5= 100.5= 65254= 0.08100=1.820.63=4.51.5=10.63=23199= 3.72.5= 32+268=1.30.7 = 2.40.6 =7997
2、 = 1206 910070= 1-0.2=145-99=1025= .560= 3.12+5.2=11.3-8.6= 0.23 0.59+0.22600.5= 20.29= 457+198= 756197= 45+15-45+15= 5.4-2.5-1.4=0.361.2= 3.30.2= 5.53=14.5-9.5= 40025416 2.13 0.90.26= 821202= 0.2550=30.216= 7(100.5)= (0.180.9)9= 16.4(3.5+6.4)= 8.32.50.4=0.6+0.699= (0.88+0.16) 12.6+5.3+6.4= 9.60.4 6
3、1.4+64.6= 0.8(0.40.2)=13.6810.4 0.740.001= 2-0.35-0.65= 6.4+1.07-0.47=1.50.04= 42035= 0.49+0.61= 2.4 0.640.16= 5511.7+2.3= 735-298= 81027= 10-8.25= 3200 360120=1.29-0.18= 15(100+3)= 0.6+5.47= 36+54= 7000200= 398+294=500-12= 250800= 97-59= 644= 998-299= 240 54-15= 1407= 299+455=700=900 17+49= 25+68=
4、542-298= 152-46= 620-290=100-79= 860-370= 038= 670-540= 894-399= 68101=19 47 95-64= 4019= 95 590+30=1100 83-25= 997+674= 4200 5500500=44 71-17= 900 60-52= 60-36= 7+75=10000 500-27= 6600110= 91-23= 22 0346=12532= 21 1250 439+61= 392+208= 188+702=15 200-47= 289-98= 66+25= 239+42= 6565 545= 65013= 7403
5、70= 75 14096003200= 295= 200-104= 15+97= 58 721000-37= 6000150= 101+52= 47-19=540 7406= 20000 28300= 25 4350530-250= 600185-86= 906= 700-7= 120+390= 64+36-58=4038296 (18+25) 7125+125= 1007+7= 90-69+27= 410-350-20=(100+2)=(100-1)=(40+7)= 645-(500-1)= 870-130-150= 53-38-14=6+11 827-59-241= 678-372-28=
6、 17+15+18= 5000+4000-300=310+260+420=3+164= (120-302) (305+30) 42018+580+180=75(18+14-27)= 9006- 52040= 60-60(43)= 87(20+30-47)= 90+90(488)= 655+3 8.2+0.54+0.46= 64003.9+2.03= 250-160=560 827125= 12 1-0.2= (180+20) 2126019+7=18= 14.5 (150+50) 49035= 14.5 428 272-97= 1.29-0.18= 1805 198+27=8+0.4= 2.5
7、+3.2= 103 (22+78) 160 2.4-1.7= 2.4-1.8= 0.25+0.75= 86.2+15.8= 2133= (25+24) 8-2.5=175-35= 420-150= 9+0.1= 46+49+51= 174-48-52= 1.05-0.09=(125+50)=610= 0.6+7.45= 724+28 200 20-19.7= 731=0.82+0.08=10=410=170.56+0.4= 1.25100= 5.6+99=10025= 1-0.93=52=(25+50)= 90-0.9= 345+298= 0.0560= 0.5+0.4= 0.35+0.43=
8、 2.8-1.2= 9.7-7= 7.8+2.2= 5.8-5= 6.7+3= 840 21=24 1-0.08= 621-199= 750260= 360+640=12-1.46-0.54=800= 110600=6= 30270=9015= 17575= 57亿+13亿=61万25万= 1144102=320168=235= 98= 430270= 376-198= 2.5+3.2= 9.94.8=80.72= 0.25+0.75= 381938= 7804 4005200= 6025= 300 84 535=640 96060= 4250= 0.60.47= 25 10.06=0.84.
9、7=0.75100= 5.610010= 4 0.08 +1.22= 45万+256万=7.41000= 4(257)= 72060= 1-0.93=800=760-450= 310+48= 240+160= 90 670-500= 76万+19万= 98-49= 410-203= 230万-70万= 82万-54万= 320+60= 860-47= 7209 430190= 51030= 340+270=18=578= 38+90= 130 38056=580410= 19668= 18万23万= 1000620= 410-203=578= 38+90=9= 84万48万= 64万34万=
10、7200 9616=98-49=340+270= 12524=48=63045 299+435= 260-98= 3.72.5= 12096048= 431+199= 362-103=848= 2.4.60.6=997=4.31.5= 300841616= 21.1= 7.52.8=(3625)=6= 6 650580= 6436= 6030= 8756=35= 420(420300)= 24192419= (5921)(726)=125+125+125+125+125+125+125+125=四年级口算练习题500道20030 424 637 23020 1303 6050 1502602
11、7526 2140 3580 3006 8 5160 805 240100120025027090 5010 36050028070 344901201448030180017 48901400921507224 32007014 28613 6501047 914501884190050269331 7437 21036250 1607619 800 1104004209015 46 4816 118.19 60.025 3.66.3 3.50 3.5 0.90.3 10.06 90.5 1.252.64.120.350.27.50.1 0.060.20.48.21.8 10035.222.40.2240.90.523.991 03.528.47 0.340.50.7 0.17 30.41.20.720.6 2.61.3 0.63.65 7.821 0.0011.43.65.60.8 1.4 0.484.40.11 4.23 3.20.4 0.30.01 5.10.280.90.45 9.616 10.01 0.017.51.5 0.811025 4.80.16 3.89 3.526.41.51.87.20.9 2.264.512.54.52= 7.8+0.22= 3.40.
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