小學(xué)五年級(jí)數(shù)學(xué)計(jì)算能力競(jìng)賽題[1].doc

五年級(jí)數(shù)學(xué)計(jì)算能力試題（五）姓名_ 得分_一、直接寫(xiě)出結(jié)果。 0.76+2.4= 3-0.83= 1.60.08= 0.424.2=2.43= 9.30.93= 1.3-0.03= 5.7+3.2=8.48.4= 7.20.72= 0.782.5= 0.5418=0.020.5= 3.60.3= 6.37= 5.6100=0.750.25= 0.1258= 4.80.3= 0.96+0.2= 0.5628= 0.360.4= 0.640.8= 0.723.6= 3.6+2.44= 0.81.1= 7.2+12.8= 46.73.8=12.84= 5.2-1.13= 12.55= 1.6441= 1020= 2415= 8.6510= 0.350.6=3.08-0.3= 4.951000= 6.90.1= 0.40.5=2.40.8= 10.89= 9.60.8= 0.1082=4.95+0.9= 9.650.1= 0.325100= 2.58=0. 560.7= 0.1254= 3.280.1= 3.90.13=7.20.1= 0.010.1= 0.250.4= 1.60.8=12.5= 1.250.8= 3.20.04= 01.7=0.22102= 90.254= 0.253.974= （1.28.8）0.4=14 - 4.7=2.50.4=0.32= 4.22.14.22.1=1111= 1212= 1313= 1414= 1616=1717= 1818= 1919= 1112= 1113=1114= 1511= 1116= 1117= 1811=253= 255= 256= 258= 2516= 2525=3535= 4545= 5555= 6565= 5575= 8585=1252= 1254= 1256= 1257= 1258= 12516=2.50.5= 4.50.5= 5.50.5= 2.40.5= 4.80.5= 50.25= 2.50.25= 0.50.125= 5.50.125= 1.60.5=2.60.5= 3.60.5= 7.20.5= 9.40.5= 3.60.1=14.31.1= 1321.1= 16.51.1= 19.811= 12580=二、怎樣簡(jiǎn)便就簡(jiǎn)便算。251.4-2.74-3.26 4.33.85.73.8 0.47986.93.10.2 0.27990.27 3.33.85.73.8+3.84.2-2.10.7+5.08 2.07+2.3+6.93+7.7 2.53212.54.5102 （5.84-3.9）0.4 3.680.254999+99.9+9.99+0.999 4978.497849.78497.820001999-19991998+19981997-19971996 1995199419941994-1994199519951995 22.5+2.52 7878787888888888101010122222222 22229999 0.01+0.03+0.05+0.07+0.002+0.004+0.006+1.98+2199.81990-198.81998 199.819