1、小学数学五年级上册简便计算练习 1一、请用简便方法计算下列各题0.250.28 0.1253.22.5 3540.2 0.2540.254 3.59.9 3.599+3.5 3.5101-3.5 3.59.9+3.50.1 3.52.7+350.733.52.7-3.50.7 (32+5.6)0.8 3.50.6-0.50.64.93.5 70.254 70.125 8 一、计算下面各题,怎样算简便就怎样算。 姓名28.30.12.7 58.360.518.2 1.018.5 0.79980.79 2 0.481.25 0.255.80.4二、解方程 12x-8x=4.8 1.2x=81.6
2、(200-x)5=30x-0.7x=3.6 5.6x=33.6 3.5-5x=2x+3x+10=70 5x+x=9 9.8-x=3.85x-45=100 4.5x-x=28 75.6x=12.6(x-140)70=4 x+2x+18=78 (27.5-3.5)x=40.5x+8=43 3200=450+5X+X 45x=201.5(x+1.6)=3.6 155X-2X=18 91x 1.37(6.5+x)=87.5 9x-x=16 6-2x=11一、直接写出得数。 (10 分) 姓名:_1.54= 5.81.2= 450.2= 4.088=0.540.6= 3.12.9= 0.123= 0.40.7=0.321000= 7100= 0.80.02= 0.840.3=3.680.01= 91.5= 0.40.5= 0.440.6=2.50.4= 0.1258= 3.60.4= 3.927.2=二、竖式计算。(1)7.60.9 (2)10.50. 3 (3)4.250.18(4) 0.30.12 (5)104.7826 (6) 34.20.8三、递等式计算,能简算的要简算。8.710.1 7.062.45.7 6.350.81.25