简便计算专项练习

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1、一、能用简便的要简便计算12.96-(9.6-1.52)4.8X0.252.37X2.5X45.74X99+5.746.73+2.56+1.44+3.271.5X10285X10.1103X0.254.7X10.27.63X99+7.63(6.7+6.7+6.7+6.7)X2.59.8X25X424004-16H-0.52.8X3.2+3.2X7.20.65X2011.2X2.5+0.8X2.58.6X10.132X0.25X0.1250.25X4.78X47.2X0.9+0.01X7.22.5X7.1X416.12X99+16.125.2X0.9+0.98.25

2、X4.08+0.75X4.08+4.084.32+5.43+6.684.3X50X0.264-2.64X0.515.17-6.8-3.226X15.7+15.7X2412.75—(2.75+6.8)(2.275+0.625)X0.281.27+3.9十0.73十16.18.9X1.1X4.71.34+1.8+3.66+0.22.7X5.4X3.90.96-0.28+0.04-0.723.6X9.85-5.4612.78-(4.97+2.78)8.05X3.4+7.631.7-0.5X0.7-1.656.58X4.5X0.935.72-4.9-(5.72+5.1)4

3、.8-4.8X0.53.1+25.78+6.9(1.25-0.125)X815.25+4.72+4.75+5.284.8X100.134.82-(4.82+15.2)56.5X99+56.57.28+0.94+2.72+0.067.09X10.8-0.8X7.097.84+0.73—0.8412.5X0.4X2.5X81.6+0.4—1.6+0.40.87X3.16+4.6462.84-2.54-0.49.5X1017.3X990.68F(5.2-3.5)XI.25(1.25+2.5)X840.5-^0.81X0.189.42X10—94.2X0.96.81+6.

4、81X990.25X185X406.5X(10-3.7)+2.98L4.75+8.44-(9.2-6.8)JX404.4X0.8-3.4X0.819.8-0.6X0.6-0.640.125X7.9X16(9.37+9.37+9.37+9.37)X2.54.2.XI.十1.XI.751.48X(7.3-5.8M1.5X7.523.8X10.124-L5.4+(0.63+1.294-0.23)J2.5X(3.8X0.04)2.18+4.65+7.82+5.35+12.57.69X10115.84-2.17-3.833.8X10.1(25+2.5+0.25)X40.25

5、X39+0.25(35.2X45.6+45.6X63.8+45.646X0.33+54X0.33((1.9-1.9X0.9)C3.8-2.8)二、用竖式计算1.8+0.02=5.76X3=2.08X7.5=0.43X0.28=0.72*0.9=90.75*3.31.05X2.4=4.6X0.6=0.2^0.01=16.9^0.131.894-0.54=3.08X0.43=0.25X40=3.7X0.0165.61H-6.1=5.22=29二1.25X0.8=5.2X0.66.21^0.3=13.95^3.1=5.5X66=6.4X0.51.34-0.95.93X0

6、.767.8X0.35=5.25X521.844-0.73—2.088.4X0.25=0.042X0.5428.14F6.73.54X134.1-1.2980.25X0.0460.396宁1.2二20-5.6746.84X7.451.08X2515.6X13=5・4=0・03636.72=2.40.125X1.4〜0.025X14=5.778=5.4二110.7^0.5410.1^3.3=0.04X0.12=1.5X0.25=1.204^0.43=3.25X9.04=6*1.2二9.24-2.3=3.5X0.2=7.15X2218.9宁0・54二6.45X0.73

7、=4.8+2=1.55=3.90.35X8.6=1.5X26.7=3.5X24=8.4X1.3544-0.36=7.218*364.25X24二35.4X4.20.462F1.45.244-7.25.24*7.22.52X3.40.7564-0.36=5.844-0.1687.11^3.12・5=0・7=3.06X36二8.02X3.5=1-0.01=3.68X0.251.44^1.8=8.9X0.05=7.6X1.05=4.48X0.45.864-0.2416.324-515.56一0.834.8X0.25=0.18X15二8=116.5-5.6=13.76X0

8、.8=9.