五年級小數(shù)乘除法計算競賽題

1、1五年級數(shù)學(xué)上學(xué)期計算競賽題五年級數(shù)學(xué)上學(xué)期計算競賽題姓名姓名得分得分一、口算一、口算（5分）分）0.240.240.2=0.2=0.960.960.03=0.03=3.243.2424=24=3.243.240.24=0.24=3.243.242.4=2.4=30300.01=0.01=0.450.452.52.5＝0.80.81.251.25＝0.30.33.63.6＝0.920.920.40.4＝二、判斷（二、判斷（5分）分）1、

2、a2.12.1＜a（a不為不為0）。）。()2、2.62.6.8的積是兩位小數(shù)。（的積是兩位小數(shù)。（）3、近似數(shù)是、近似數(shù)是6.06.0的兩位小數(shù)最小是的兩位小數(shù)最小是5.955.95最大是最大是6.046.04。（。（）4、1.71.70.40.4的商是的商是4，余數(shù)是，余數(shù)是1。（。（）5、2.252.251.51.5的商的最高位是十分位。（的商的最高位是十分位。（）三、筆算：（三、筆算：（3030分）分）3.083.080.43=

3、0.43=1.51.526.7=26.7=5.225.2229=29=18.7218.723.6=3.6=13.9513.953.1=3.1=2.52.54.12=4.12=4.64.60.023=0.023=0.0090.0090.005=0.005=39390.0003=0.0003=5.65.6700=700=7607600.008=0.008=4.3294.3296=6=4924920.004=0.004=18.6318.630

4、.03=0.03=9.59.599=99=13.513.50.98=0.98=7.697.69101=101=3.83.810.1=10.1=20.1250.12572=72=719.7=19.7=四、簡算：四、簡算：2.52.51.251.250.320.32（1.51.5＋0.25)0.25)44.34.350500.20.21.251.250.50.50.80.87.287.28997.28997.281.251.2581.251

5、.250.969.60.969.69.99.94.84.8100.1100.112.512.50.40.42.52.58(9.379.379.379.37)(9.379.379.379.37)2.52.5四、遞等式計算四、遞等式計算1.51.5（（10.0310.03－15.615.67.57.5）3.123.12（（0.90.9＋0.70.70.10.1）4.73.914.73.91(3229.7)(3229.7)9.29.7289.