北师大版五年级数学寒假作业

1、口算0.5X8=3.6X0.4=39.68x0=47.6X1=0.15X7=4-0.5=12-0.06=12+1.2=3-30=3.2X6+3.2X4=二.竖式计算8.08-2.68=5.546+29.38=17.04X0.268.35X3.5=三.脱式计算2.65+2.77)+(1.98-0.98)3.7X91.6+6.3X91.6=0.45X12X0.2=6.2X2.1-2.1=口算0.2+0.8X0.5=6.03X1OOO=10X0.6=6.45X0.01=2.50.1X0.1=0.24X0,5=5,4+3.6=1.25-0.25=10.2二.竖式计算（得数保留一位小数）0.43X0.2

2、9弋52.6X0,234.58X0.37七2.9三.脱式计算2.8X1.43+0.57=10-6,06+8.5=6X0.25X1.8=144X4X0.36=X4.5=x1.8+3.6+27.2=0.24X0,5=5.4+3.6=1.25-0.25=10,2X4.59*0.250.125X4=1.25X8X0.5=16XO.O1=1.78-0.3=.竖式计算4.3X8.14y27.6X0.45y27.6X0.45%20+12y.脱式计算0.87X3.16+4.64=6.8X0.75-0.5=13.75-0.125-2.75=53+23.4+7.2=一.口算0.01-0.1=3.6-0.4=1.8

3、0.6X20=X0.8=x-0.4x=2.45d-2d=X3=0.120.27X0.7=4-0.003=+5=二.竖式计算2.5-0.7=2.5-0.7=3.25X9.04=5.08x0.25y三.脱式计算2.881-0.43-0.24X3.5=28-(3.4+1.25X2.4)=(31.8+3.2X4)+5=31.5X4+(6+3)口算1.6-0.5=0.2+0.05=2,5X2,3X4=4.7X6+4X47=0.5X4-0.5X4=38.5XOX0.38=二.竖式计算36.8+16弋10.1-3.315.3三.脱式计算0.64X25X7.8+2.2=+2.5+2.5-2=1941.5-1.

4、5+1.5=3.6-1.2-2.4=0.6X0.8=3X0.9=+11弋0.78-64.8-1.8X0.9=36.72+4.25X9.9=一.口算2.5X0.4=3.6X0.4=12.5X8=50X0.04=80X0,3=1.1X9=9.32-5.98=7.61-7.09=9.73-5.77=8.71+3.59=二.竖式计算1.64+2.35=8.34-6.22=22.4-7=0.48X350=.脱式计算5180-705X6=24-2.4-2.5X0.8=3.416+(0.016X35)9.4X5.8+10.6X5,8=一口算8.03-7.77=1.64+1.32=9.29-7.66=2.26

5、+9.34=6.45-4.57=9.31- 4.22=5.19+7.38=5.74+8.14=7.81+6.1=7.72+7.07=二，竖式2.05+11 =2.14X3.6=0.15X0.84=2.07X4.8=三想一想，下面各题怎样算简便就怎样算！3.04+5.83+16.96+4.171.25X32X253.25X1.6-0.6x3.250.88+4+0.25一.请你在一分钟内快速口算出下面各题的得数。3.8+5.2=6.5X4=10-0.99=3.85.1-17=0.25X8X0.4=1.25X80=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)+6.726

6、.7+(2.53+1,84)X5三.计算下面各题，能用简便方法计算的要用简便方法计算。0.25 X8,3 X4+1.723.6-0.5X 0.5-6.752.3X+ 1.9=13.9+ 0.1 =4.8-0.24=0.63-21=1.25X5.7X810-0.2+2.5(5.38-1.82)+6.44X2.3(2.4+2.4+2.4+2.4)X0.25一口算630-70=4.3-0.8=3.4+1.6=1.84X700=18X50=4.2+6=二.竖式计算12.6+3.4=10-7.64=9三.脱式计算13.8X4.5+6.28.032+12.6-0.421.37.2+2.8=0.9X0.01

7、=.52-34=8X1.36=-0.3=2.5X40=X1.8-16.39153-0.51+3口算12X0.6=0.1-0.001=3.2-0.08=2.8X0,2=7.9+3.1=0.9X0.5=0.24X5=(0.85-0.85)X0.95=2.5X4=20X0.5=二.竖式计算13.88-6.29=9.25X16=8-50=0.99+1.1=F面各题，怎样简便就怎样算3.2 X 16.8+83.2 X 3.216.8-3.28-6.72(19.5-5.3 ) X 2.8+157.5X (5.1+2.1 ) -1,80.9-0.01=3.5+7.6=0.42X0.5=0.51-1.7=4.

8、72+4.2=5.2-0.13=99X1.01=13.5-2.8-7.2=32.8+19=7-0.25=二、列竖式计算12.6+7.43=29+22(保留2位小数）28.448-14=32X6.07=40.2X2.7-16.2(24.8+32)+77.32-4.37X0.84.05-0.05-0.81口算3X 0.2 x 0,5 =8X (2.5 +0.25二.列竖式计算。2.7-0.32=0.96+0.3=1.5X0,4=0.36+0.64=64.32(前两行并验算)35-56=三.脱式计算7.62-0.16-0.168.75+(12.5X7)2.5X0.7x0,8=-2.5=-16=72.

9、8-0.8=8.4X0.2+1.6X0,2=0.36 x 6.9=15.36-12=5.4+(2.7X4)1.032+36-0.368.4+4.2=0.05X0.8=2.56-0.37=1.25X0.8X0.5=121.23X3=3.2-1.6=3.5+3.5X3=19.6+2=8.8一层式2.34X1.5=11.7-2.6=25.2-42=3.74-X2.5=-2.2=34=三.脱式计算0.432-(6.21-6.09)4.8-0.4-2.1-210.048X90X0.46(保留两位小数)2.46-2.5-7.9一.口算13.85.63.9+2.03=7.2X0.3+2.8X0,3=0.75

10、X4=(1.5+0,25)X4=二.列竖式629-61=4.8+2.3(得数保留两位小数)(得数保留一位小数)三.脱式计算9.28 + (2.1-1.7 ) +2.51.25 X5.7 X8+9.9=2.4X2.5=16-1.6=X1.01=4.2-0.1=4.2+3.5=6.49X0.58=（得数保留两位小数）0.27-1.1弋（得数保留两位小数）5.6X12.510-0.2-2.52.14-0.9=27+456+73=1224-4+56-4=7.2-1,2=二.竖式 13.6 -2=11.5+5=三.脱式计算-0.3=2.87+0.7=13+4=3.86-100=3.9X0.01=98.4

11、X100=19.5-3=12.6-12=11.72-7.85-1.721.8X25+12X2.5口算9.1-1.3=8.2-10=1-0.45=36+2.45=0.42-7=0.69-1=1.21-0.6=0.5-0.2=0.48X0=8.4-2.1=二.竖式计算28.8+24=20.4-4=96.6-42=26-4=4.264 -(0.16 X 20.5)三.脱式计算2.6义(2.139+9.3X6.2)(18.4+27.83+4.6)X0.22.6X1.9+2.6X1.976-1000=8.7-5=1.28X8=40X25=0.51X100=0.58X99=0.6X0.9=0.1X0.5=

12、0.5X2-0.5X2=12.4-(2.4+3,25)=二.竖式计算55.8+31=82.5+15=82.5+25=18.9-6=三.脱式计算0.56X23.79-2.68.45+1.3+2.69.42+2.8-0.255.4+(2.7X4)12.5 -0.5 -0.4=1084-18X4=2.6+3.1-2.6+3.1 =0.47+0.13=4.8 +2.3（得数保留一位小数）1-0.95=0.3+0.27=二.竖式计算629-61=（得数保留两位小数）4.5+4=4-0.6=6.49X0.58=（得数保留两位小数）73X4X25=10+0.08=0.27-1.1弋（得数保留两位小数）三.脱式计算39.6+（1.8+1.5）（2）2.432-3.2+2.640.2X2.7-16.2（24.8+32）-7一.口算0.95+0.05=2.5+3.2=0.74+0.16=480-40=0.53-100=5.1+2.3=二.竖式计算2.7-0.32=35-56=三.脱式计算7.32-4.37X0.84.05-0.05-0.8123X1OO=9.8-4.8=125X80=0.078-10=0.36 X 6.9=15.36-12=7.62-0.16-0.168.75+(12