2023年北师大版小学数学四年级下册计算题题库

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1、小数乘法小数加、减法结合律：(a+b)+c=a+(b+c)(ab) c=a(bc)乘法分派律a（b+c）=ab+acab+ac =a（b+c）脱式计算（按照运算次序）1.140.7= 4.528= 7.420= 6.21.4=5.42.6=26.8+3.02= 6.07-4.993= 3.7+2.36= 15.4+2.97= 10.2-8.75=2.51.94421.250.086.94.83.1 0.66.22+3.78250.230.4（40+0.8）2.512.5（0.8+80）30（1.5+0.1）3.2523-3.2513 0.281880.2812.83(8.453.69) 100

2、(8.75.24) 84.066.475.19 5.43+(15.27+30.29)2.81.430.572.31.4= 3.71.8= 5.21.6=3.60.8= 0.661.4= 7.3-2.25= 3.8+3.54= 3.05-2.9= 3.1-2.07= 12.7+6.58=1.20.04253201.25818.76-3.47-0.53 5.17-1.8-3.20.4232.50.3634+0.36667.52.3+2.52.3(1.250.125)84.55.2+4.54.87.642.5-3.642.55.03-2.5+0.96 22.8-5.23-9.25 9.29+3.76

3、.3 8.02-5.4+0.984.6570.2380.420.8= 0.240.19= 2.41.3= 4.52.3=0.720.27=28-3.56= 10-0.81= 10-0.36= 20-0.92= 8-7.089=0.2521401.25210.84.025.40.98 5.171.83.2 3.687.562.686.343+576.317.019+17.019.712.3+7.79.71（100-0.4）2.510（5.2+12.3）67.2+41.5-71.39 10.75+（0.4+9.4） 16.23+8.92-7.56 50-28.51.2 13.79-9.53+10.

4、57451.2= 1074.6= 760.37= 0.280.27= 0.750.42=96.85-85= 45.45-45= 10-0.41= 45-0.45= 3.57+3=0.13250.4（242.5）0.0470.8-1.25-1.75 4.02-3.5+0.98 4.25-0.83+0.75（2.50.25）0.47.910.80.87.918.769.918.76（8+0.8）12.52615.7+15.7241.5+0.68-0.6 72.8-8.6+5.84 20.8-（15.98-3.9） 32.5+（5.07+6.1） 3.52-（4.6-3.82）5.612.9= 3.

5、771.8= 0.0296= 5.220.3=9.990.89=5.8-3.25= 4.8+18.09= 10.3+58.7= 8.3-4.56= 9.03-8.5=12.50.358253.10.448.14-2.43-7.57 42.32.50.515.80.24.87.87.80.5227.53.77.53.7（0.8+8）12.52.50.6-1.50.62.5（40-0.4）3.20.36-4.8 0.566.23.78 4521502.15.45+2.652.20.6590+4.25.6370=75.690=800.78=8.060.04=1.338.9=5.94+10.7= 12

6、.3+0.85= 37.8+3.02= 0.704-0.25= 10.1-0.55=480.50.447500.246.322.512.52.50.840.2512.80.40.936+0.934 （0.4+10）2.5 3.2523-3.2513 0.281880.281.25（100+0.8）50.41.9-1.8720.81+10.412.4-4.091.33.2（14.7-7.65）3.76+0.25+0.40.680.77=45.60.26=9.570.21=386.75=7.047.8=4.1+2.53= 5.07-0.8= 5.7-0.73= 13.18+5.27= 5.16+7

7、.9=1.2526807.62+2.6+2.3812-0.28-0.720.2512.90.40.253212.53.6588+3.65120.125（8+0.8）2.5（10+0.4）0.275.6+4.40.27（0.4+40）2.523.66+4.34-3.56 5.6-0.81-1.29 15.9+3.26+4.175.8324.271.3+4.70.91.420.25= 4.060.06= 60.52.1= 200.78= 2.640.2=1.4-0.55= 3.6+0.46= 43.5-27.34= 15.08-3.9= 75.6-3.55=20.15+7.62+7.85 51.27-8.66-1.34 8（1.2512）0.254.740（0.40.02）2.533.319+33.32.92.5+17.12.5（8+0.8）12.52.512.4-2.42.5(1.250.125)86.9-4.83.19.293.7-6.3 8.2-5.4-0.986.40.253.640.6+0.45.5