北师大版五年级数学寒假作业文档格式.docx

1、1.8三脱式计算2.81.430.57= 106.068.5= 60.251.8= 1443.627.2=0.244.5 2.56 90.25 0.1254= 1.2580.5= 160.01= 1.780.3=二竖式计算4.38.14 27.60.45 27.60.45 2012 0.873.16+4.64= 6.80.750.5= 13.750.1252.75= 53+23.47.2=0.010.1= 1.820= x-0.4x= 5d-2d= 0.270.003=3.60.4= 0.60.8 2.43 0.120.7 452.50.7= 2.50.7= 3.259.04= 5.080.2

2、52.8810.430.243.5= 28-（3.4+1.252.4）= （31.8+3.24）5= 31.5（6+3）=1.60.5 0.20.05 2.52.34= 1.51.51.5= 3.61.22.4= 4.7644.7= 0.54= 38.500.38= 0.60.8= 30.9=36.816 10.13.3 15.311 0.7810.64257.8+2.2= 22.5+2.52= 19464.81.80.9= 36.724.259.9=2.50.4= 3.60.4= 12.58= 500.04= 801.19= 9.32-5.98= 7.61-7.09= 9.73-5.77=

3、8.71+3.59= 164235= 834622= 2247= 048350=51807056= 242.42.50.8= 3.416（0.01635）= 9.45.810.65.8=一口算8.03-7.77= 1.64+1.32= 9.29-7.66= 2.26+9.34= 6.45-4.57= 5.19+7.38= 5.74+8.14= 7.81+ 6.1= 7.72+7.07= 9.31- 4.22=二，竖式2.143.6= 0.150.84= 2.074.8= 2.0511=三想一想，下面各题怎样算简便就怎样算！3.04+5.83+16.96+4.17 1.253225 3.251.

4、6-0.63.25 0.880.25一请你在一分钟内快速口算出下面各题的得数。3.8+5.2= 6.54= 10-0.99= 3.81.9= 13.90.1= 5.117= 0.250.4= 1.2580= 4.80.24= 0.6321=二认真计算下面各题，除不尽的得数保留两位小数。（23.6-5.20.4）6.7 26.7（2.53+1.84）5 1.255.78 100.22.5三计算下面各题，能用简便方法计算的要用简便方法计算。8.34+1.7 23.6-0.50.5-6.75 2.3（5.38-1.82）+6.442.3 （2.4+2.4+2.4+2.4）63070= 4.3-0.8

5、= 3.4+1.6= 1.80.3= 2.540=700= 1850= 4.26= 7.22.8 0.90.01 12634= 10764= 95234= 8136=13.84.5+6.2 8.032+12.60.4 21.31.8-16.39 1530.5130.6= 0.10.001= 3.20.08= 2.80.2= 7.9+3.1=0.90.5= 0.245= （0.85-0.85）0.95= 2.54= 200.5=1388629= 92516= 850= 09911=三下面各题，怎样简便就怎样算。3.216.8+83.23.2 16.8-3.28-6.72 （19.5-5.3）2.

6、8+15 7.5（5.1+2.1）1.80.90.01 3.57.6 0.420.5 0.511.7 4.72 + 4.2=5.20.13 991.01 13.52.87.2 32.819 70.25二、列竖式计算126743= 2922（保留2位小数） 2844814= 32607=三脱式计算。40.22.716.2（24.832）77.32-4.370.84.050.050.8130.20.5 0.960.3 1.50.4 2.50.70.8= 82.5（2.50.25） 0.360.64 64.3216 72.80.8 8.40.21.60.2 二列竖式计算。（前两行并验算）0.32=3

7、556=0.366.9=15.3612=7.620.16-0.168.75（12.57）5.4（2.74）1.032+360.36 8.44.2 0.050.8 2.560.37 1.250.80.5 122.51.233 3.21.6 3.53.53 19.62 8.82.2= 二竖式2.341.5=11.72.6=25.242=3.7434=0.432（6.21-6.09）4.80.4-2.1210.048900.46（保留两位小数）2.462.5-7.93.92.03 7.20.32.80.3 13.89.9 2.42.5 161.6 0.754 （1.50.25）4 5.61.01=

8、4.20.1 4.2二列竖式62961=2.3 6.490.58=0.271.1（得数保留两位小数）（得数保留一位小数） （得数保留两位小数） （得数保留两位小数）9.28（2.1-1.7）2.5 1.25 10 5.612.52.140.9 2745673= 120.3= 2.870.7 134244564= 7.21.2=3.86100=3.90.01=98.411.55=13.62=19.53= 12.612=3.250.21.561.7+0.441.711.72-7.85-1.7225+129.11.3= 8.210= 1-0.45= 36+2.45= 0.480=0.427=0.69

9、1= 1.210.6=0.50.2=8.42.1=28.824=20.496.642= 262.6（2.1399.36.2） （18.4+27.834.6） 2.61.92.61.94.264（0.1620.5）761000= 8.7-5=1.288= 4025= 0.51100= 0.5899=0.60.9= 0.52 12.4-（2.4+3.25）=55.831=82.515=82.5 18.96=0.5623.792.6 8.451.32.6 9.42+2.80.25 5.412.50.4= 108418 2.6+3.1-2.6+3.1= 7325= 10+0.08= 1-0.95= 0.3+0.27= 0.47+0.13= 4.5+4= 4-0.6=6.49（得数保留一位小数） （得数保留两位小数） （得数保留两位小数）39.6（1.8+1.5）2.4323.2+2.6 40.2 （24.80.95+0.05= 2.5+3.2= 0.74+0.16= 23100= 9.8-4.8= 48040= 0.53100= 5.1+2.3= 12580= 0.07810= 7）0.52+0.4= 7012= 0.25100= 3.4-2.8= 0.6-0.37= 1-0.75= 0.51000= 0.82+0.3= 13.5+6.5= 3.05100= 0.36 0.432