1、六年级数学总复习简便计算练习题 一、口算。(10分)102.65 03.8 90.08 240.4 67.50.25 614.4 0.770.33 51.41.6800.125= 3=二、用简便方法计算下面各题。(90分,42052)4+3.25+6.8 12(1+2) 4001258 25(378)()12 12 34(2) 1258.8 4.354.253.653.75 3.4993.4 17.158.471.53 1734 2 0.1250.2532 22.32.455.34.55 (+)72 4.253(21) 187.711187.7 4357.1250.5 () 2.42+4.58
2、43 6.62.5 4.6+5.4 2.8+7.2+ (+) 0.75+0.375 5- +2.25+ + + + + 48.3- 4.25+6 0.6250.5+62.5% 2.5(+) 22+2575%-70.75 0.2563.5 2.5- +3.125+ +(-1.8)(111+999) 56(-) 49.5-(50-)0.6 + 1125-996 45(+0.6) 89737.5%+1040.375 ()(24)(5.375) 3.5+1.25+3.8 299101 563999 72156-5672 2532125 70999+709 14. 0.2548 2.50.42 26.6
3、+2.56 75.399+75.3 4.63.7+540.37 0.125+8.25+12.5% 1161 154.255 19.826.573.43 4.6+3+6+5.4 4+2.25+5+7 9.632.54 60.25 8.37-3.25-(1.37+1.75) 210020 3 + + 18(+) 7+5 (+) (+) 7+5 ()24) (+) (+) (99)9 (3217) (25) (2121) () ()30 3 4 () 235 - 13518 153 0.653 () 5841 ()151110 - - + 25 13.098.124.88 12103450075 () 3