新人教版四年级数学下册专项练习：口算题(精品)

1、 16=20=45+156=6524=303+8=4004+20=10+123=0(8020+80)4=70+(100-105)= 36040=5=20=40=60=2085=600-3200=20+202=35-255=36+8-40=280040=9814 =9624 =5614 =6513 =7515 =30=30=16=9=5=4860=6=25=40=14201=2594=200-333=3020=720452=1 12 125= 6300690420=102+284=5= 32 20= 25490 35 2= 45360452= 375+99= 18= 7000 40= 45 22

2、= 6= 30= 468+197= 70=420 35 2= 480+290= 10= 264+198=93030= 15= 232= 800210070=85= 612 12= 2528=3= 4518= 22= 960063072094=320 2= 16= 50 50=3365= 30= 30= 2400 20= 521-305= 90=25 6 4= 3500252=25+340=6= 560069 23= 360+140= 48= 67+28= 20= 12516= 14= 15+22=102 40= 20= 18= 26 90= 390= 34= 75 19+75= 62+18=4

3、123= 560 35 2=2285=450045=7=4=4060=254+99=2 12=1036-155-245=865 99+865=80=24=1.854 0 100=9374=59.23843.2=25 9 4 7=1814-378-422=398+558+442=60=95 46+46 5=10234=300 46.81800 5 2=2265=14.60.2=58+79+42=8056=90-25=99+99=50=1.359=158=614402=6.4016=36=784=35 35+65 35=12580=8.45649.51530=4625=3.7410=30.50.7

4、490=24=320.1=5728=3720=17.310=12516=36024=302 783 0=2648=5.769=3 0.020.1=5.06x-4.07x=a+0.4a=120.3=4.6x+2.7x=1.7+0.43=0.58a-0.47a=1.50.4=0.1233.6120.6846.51310.554.8x3.1x=1.250.2=12a0.870.494.22.13.52008.4a=4 64.3270.050.8=6.05x-4.96x=3.27.6b16=0.25=4.3b=6x4.9x=2.343.2505.1b+11.9b=1.233=1004=5.1x+2.9

5、x=1.6=2.5=3.120.5=3.5t-t=510.2=8a3a=7b+b=0.30.4=105.4+1.4=0.75=0.01=5.60.1=x4c-2c=3.42.7x+3.6x=160.12+3.4=100.07=x=3x+4x=1.6=10x-3.7x=0.90.420.01=0.1=0.98+1.82=2.5x+4.3x=72.80.8=4.3b2.7b=2.7b+5b=3.53=80.030.01100=610=5 7510=12.580.450300.552.634.127.50.13.50.01=3.7+5.9=4.5-2.9=7.1-2.2=0.960.8=4.50.9

6、0.873.20.8=0.45+0.55=6.48=1.573.71.4=7.87.2=2.199.1=100.89=0.60.42=8.15.1=0.72-0.24=5400=1.3280.7810.3250.60.90.33.50.22.010100.050.137.211000.749.9+11.1=1871000=1+3.89=0.05440.30.08110=6 1.250.2509.84.12=2.50.5=8.40.70.340.17=30.44=3.20.40.30.011.50.3=0.350.2=7.50.10.90.3=10.06=10.410.4=1.851.9+0.3

7、94.85.20.50.4=40.25=40.55.10.170.281.40.90.459.61610.01 0.0117.51.50.81930.57.20.92540.254=2.261.2690.50.720.62.61.3=0.60.303.65=3 4=1.258=8.40.4951.952.548.19=0.20.4=100-35.222.50.42.452.5460.0253.6+6.3=7.821 =0.0010.11.40.73.60.065.60.95.61.40.480.84.40.114.23 253.302.540.054=0.2240.90.523.99103.5

8、22.550.30.137.29937.23.5003.5=0.90.3=10.0690.5=10254.80.1603.893.52137.299+37.2=6.444.52=7.8+0.22=1.258=8.47=20.640.363.40.4=2.630.3417=7 12.60.9=21.640.361.20.04=0.427=0.97+10.7=6.30.021=1.50.03=6.8-2.43=50.7=0.78-0.6=990.13.2-2=13-0.5-4=1.10.7=2.32-0.4=1.9+5.151=3.250=3.7+5.9=4.5-2.9=7.1-2.2=10-2.

9、41=2.4-0.8=3-1.04=60.1258=1.941.253.300.92.01=2.97100=203.77.3=6.3+7=0.435=8.80.11=41.20.25=0.12583.20.5=10.010.1=1.250.5=1.293=3.60.9-4=3.6-0.36=6.13-2.15=6.55=8.1-2.2=1.840=3.6-1.9=2.3+1.06=16.8-15.9=1.70.03=5.3-2.8=0.224=6.03+4.12=4.2-1.3=245=0.60.3+0.5=6.88.6=2.5-3.61.8=2.30.185.1=7.2-1.2+6.7=7.

10、5+2.5=2.199.1=50.751.50.75=0. 650.2=9.8-0.98=9.40.2=10.1-2.4=10+0.01=1.80.90.5=21.08=12-0.054=4.234.9-1.9=8.80.4=2.013=6.3+2.4=1-0.10.1=0.7+3=(1.6+0.5)5=430.01=16-4.5-5.5=1.80.33.724=5.8+7.6=0.2-0.03=10.71+4=1.20.8=3.720.2=1.67=8 7.42=0.2-0.01=40.08=9.60.8=7.62=00.752=0.81-0.63=0.040.5=0.2910=0.0192

11、=3.69=54=7.20.2=1.560=4.9-4=132=8.13=20.04=0.520=0.2540=40.4=5.40.01=5.40.1=14=101.25=50.07=0.499=0.052=1.46=8.30=50.9=7.2 0.8=36=9-8.57=0.726=3.62=2.38100=1.253.2=0.245=8.13=2.814=15.30=6.33=1-0.90.9=7.80.0210.0010.30.5=0.30.5=6.527.71.1=72.3=4.20.7=0.920.4=0.9510=1.40.2=0.5117=0.193=0.5719=2.55=0.

12、123=0.760.38=145=8.88=1.258=50.69=20.48=30.7=0.50.25=600.03=0.1280=6.39=4.515=18=10.1250.12510010.634.9+1.53=7.9-1.30.3=90.04=180.5=600.5=75=34=20+7.04=9.90.9=1.83=121.1=0.155=9.87=0.7236=9 8-0.80.8=2.3-0.69-0.31=0.16.40.1=40.250.40.872871604.5180650.32500480.023452737006430.31.595190.081.20.75159658500681.63.23.86.03135