人教版小学五年级数学上册能用简便就简便计算题

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1、一、能用简便的要简便计算12.3X4X0.2585X10.11.2F0.25+1.3X4103X0.25(4.84-6.4)H-835=12540.54-0.81X1.052.5X10286.44-0.24X0.254.2—2811.16=(10-0.7)(9.6+3.2)4-0.8(300-94.8)—0.53.2X5.6-11.40.648一[(0.4+0.5)X0.6]5.74X99+5.748.9X1.1X4.74.75+3.25X2.4+7.62.7X5.4X3.93.8X1.4+18.24-0.73.6X9.85-5.467.63X99+7.632.8X0.5

2、+1.586.73+2.56+1.44+3.278X5.2+3.8X3.8+3.82.37X2.5X4(6.7+6.7+6.7+6.7)X2.52.8X3.2+3.2X7.27.4-0.15X2.83.76X0.25-0.490.008+0.92X5-1.280.25X4.78X47.8一(1.3X4)2.5X7.1X45.6X(12.5-8.5=0.85)16.12X99+16.12[(8.1—5.6)XO.9-1]X0.45.2X0.9+0.98.25X4.08+0.75X4.08+4.0826X15.7+15.7X2412.75-(2.75+6.8)(2.275+0

3、.625)X0.281.27+3.9+0.73+16.13.94+34.3X0.212.8-4.9-5.11.2X(9.64-2.4)4-4.86.75-(0.9+3.75)2.7X5.4X3.90.96-0.28+0.04-0.723.6X9.85-5.4612.78-(4.97+2.78)8.05X3.4+7.631.7-0.5X0.7-1.6532+4.9-0.912.5X6.3+27X1.25+0.125=0.014.8-4.8X0.53.1+25.78+6.9(1.25-0.125)X815.25+4.72+4.75+5.284.8X100.134.82-(4.

4、82+15.2)7.09X10.8-0.8X7.097.84+0.73—0.844.85+0.35—1.46.3X99+6.38.7X17.4-8.7X7.415.7—4.3—5.79.5X1017.3X990.68=(5.-3.5)XI.25(1.25+2.5)X840.54-0.81X0.189.42X10—94.2X0.96.81+6.81X996.5X(10-3.7)+2.980.25X185X40[4.75+8.4^(9.2-6.8)]X404.4X0.8-3.4X0.819.8-0.6X0.6-0.644.2.XI.+1.XI.752.48X(7.3-5.8)

5、+1.5X7.522.37X6.3+2.37X3.712.773-[4.5X(0.75-0.356)+9.232.5X1.25X0.32(6.4+0.88)=0.8+3.2X1.253.8X10.124-[5.4+(0.63+1.294-0.23)]7.69X10115.84-2.17-3.833.8X10.1(25+2.5+0.25)X40.25X39+0.25(35.2X45.6+45.6X63.8+45.60.125X7212.25-3.1+0.85-6.17二、用竖式计算1.8+0.02=5.76X3=2.08X7.5=0.43X0.28=0.72=0.9二90.

6、75^3.31.05X2.4二4.6X0.6二0.2=0.01二16.9^0.131.894-0.54二3.08X0.43=0.25X40=3.7X0.0165.61^6.1=5.224-29=1.25X0.8=5.2X0.66.214-0.3=13.95^3.1=5.5X66=6.4X0.51.3^0.95.93X0.767.8X0.35=5.25X521.84^0.73—2.088.4X0.25=0.042X0.542&14^6.73.54X134.1-1.2980.25X0.0460.396*1.2二20-5.6746.84X7.451.08X2515.6X13=5

7、.44-0.03636.72一2.40.125X1.4~0.025X14二5.7784-5.4=110.7^0.5410.1=3.3=0.04X0.12=1.5X0.25=1.204^0.43=3.25X9.04=6^1.2=9.24-2.3=3.5X0.2=7.15X2218.9^0.54=6.45X0.73=4.8+2二1・55=3・90.35X8.6二1.5X26.7=3.5X24=8.4X1.354*0.36=7.2184-364.25X24=35.4X4.20.462*1.45.244-7.25.244-7.22.5