1、口 算1001740 10063 3.21.68 2.80.4 147.4 1.920.04= 0.32500 0.654.35 105.4 420 3 .5200 1.50.06 0.7515 0.40.8 40.25 0.36+1.54 1.0199 42035 2512 1350.53/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2= 1/6+1/2= 7.5-(2.5+3.8)= 7/8 + 3/8 = 3/10 +1/5 = 4/5 - 7/10 = 0.5117 32.819 5.21.3 1.60.4 4.90.7 15 612 0.870.49
2、3.8+2+2= 7.26-(5.26-1.5)= 6.28+198=526+301= 223-99= 6.25+3.85= 125+3.875= 999899= 123+25= 123-35= 567= 1355= 248+89= 146-23= 1555=456-12= 456+45= 546-457= 4510= 564-12= 879+54= 896-546= 5612= 45-5= 457+456= 0.490.7= 5-0.7=1000.5= 03.5= 10.25= 0.639=2.20.1= 5.60.7= 0.27100= 0.37= 1.851.85= 2.40.8= 10
3、0.02= 0.3220=6.30.3= 4.8100= 1.52= 100.1=480.2= 0.153= 214100= 1.81=2.33= 0.564= 0100= 10.5=4.88= 1000.01= 7.20.8= 0.4100 0.80.7 0.254 1.20.4 5.50.30.021000 0.90.9 33.6 400.05 脱式计算10030.814(9.851.07) 60(9.528.9)0.18 2.8810.430.243.5 20(2.44-1.8)0.4+0.15 28-(3.4+1.252.4) 2.557.1+2.457.1 7779+11113 0.
4、815.5-(3.21+5.79) (31.8+3.24)5 31.54(6+3) 0.64257.8+2.2 22.5+2.52 19464.81.80.9 36.724.259.9 51807056 242.42.50.8 (4121+2389)7 67115-974 46912+1492 405(3213-3189) 3.416(0.01635) 0.8(106.76)1.2 19.46.12.3 5.670.2-0.62 18.10.92+3.93 0.04+30.24+0.875 0.40.70.25 0.78+5.436+1 4.070.86+9.12.5 6.94.83.10.4
5、566.223.78 15.89(6.755.89) 27.53.77.53.7 8.542.50.4 (45.932.7)80.125 3.140.6831.40.0325.61.250.82.50.4 7.20.22.41.48.91.017.74(2.81.3)1.52.26 3.92.73.97.3181.80.1250.8 12.79.91.2721(9.33.7)5.6 15.02-6.8-1.02 5.411-5.42.316+2.323+2.3 9.43-(6.28-1.57)3.654.736.50.37 465723861010.87-0.9187 10.716.1-15.
6、110.756.59.956.5 7.0910.80.87.0925.48(9.40.52) 3201.258 18.769.918.763.522.50.4 3.94.16.15.9 9.60.80.44.2994.2 17.8(1.784) 1.252.53215.20.2540.89100.1 146.5(2346.5)3.834.563.835.44 4.3612.589.7999.7 6.94.83.1 0.4566.223.7815.89(6.755.89) 4.025.40.98 5.171.83.213.75(3.756.48) 3.687.562.687.852.340.85
7、4.66 35.61.815.67.23.822.90.189.1 9.64.83.67.140.532.47 5.272.860.661.6313.354.682.65 73.81.6413.85.3647.8-7.45+8.8 0.398+0.36+3.6415.75+3.590.59+14.25 66.868.661.340.2516.24 (1.250.125)8 3.723.56.283.536.83.96.1 15.613.115.615.62.14.87.8780.52 324.90.9 1.691.3+2.50.4 1.25322.5 96.510596.5 0.41.2+1.
8、80.413.63.5-3.63.5 6.20.3+2.80.3 7.49.8-14.5 竖式计算100l0.867= 2.1462= 0.37512= 1.8395= 0.45108= 1.05625= 1.823= 0.370.4= 1.0625= 70.86= 0.60.39= 270.43=1.23= 0.486= 4.623= 140.5= 6.84= 0.7212= 0.71.1= 0.724= 9.66= 5.213= 12.55= 0.125= 80.5= 0.3216= 0.51.1= 0.50.14= 1.254= 6.32.1= 0.924= 61.2= 0.48= 7.
9、63.8= 6.81.7= 0.5614= 2.40.6= 840.04= 0.490.7= 6.33.1= 960.6= 1.550.5= 0.350.07= 361.2= 4.83 1.80.5 0.054 05.329975= 5435= 5641= 2090= 1266= 6056= 7060= 4120= 3984= 7888= 7265= 4723= 5261= 8894= 4091= 4966= 9773= 8210= 1 814= 2144= 1120= 2434= 1059= 3183= 1055= 5321= 2550= 4019= 2455= 1187= 8674= 9391=2769 390= 1568 980= 4576 520= 1440 240=3072 960= 272 680= 3040 400= 576 120=1577 830= 5005 550= 1701 270= 6633 990=117 30= 825 750= 3901 470= 1045 190=2457 910= 6237 630= 2485 350= 2832 590=