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= 1
3、00.02= 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 5.50.3 0.021000 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
4、 0.815.5-(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 5.670.2-0.6218.10.92+3.93 0.04+30.24+0.875 0.40.70.250.78+5.436+1 4.070.86+9.12.5 6.94.83.1
5、0.4566.223.78 15.89(6.755.89) 27.53.77.5 3.7 8.542.50.4(45.932.7)80.125 3.140.6831.40.032 5.61.250.82.50.4 7.20.22.4 1.4 8.91.01 7.74（2.81.3 ） 1.52.26 3.92.73.97.3 181.80.125 0.8 12.79.91.27 21（ 9.33.7）5.6 15.02-6.8-1.02 5.411-5.4 2.316+2.323+2.3 9.43-（6.28-1.57） 3.654.736.50.37 46572386 1010.87-0.9
6、187 10.716.1-15.110.7 56.59.956.5 7.0910.8 0.87.09 25.48(9.40.52) 3201.258 18.769.918.76 3.522.50.4 3.94.1 6.15.9 9.60.80.44.299 4.2 17.8(1.784) 1.252.532 15.20.254 0.89100.1 146.5(2346.5) 3.834.563.835.44 4.3612.58 9.7999.7 6.94.83.1 0.4566.223.78 15.89(6.755.89) 4.025.40.98 5.171.83.2 13.75(3.756.
7、48) 3.687.562.68 7.852.340.854.66 35.61.8 15.67.2 3.822.90.189.1 9.64.8 3.6 7.140.532.47 5.272.860.661.63 13.354.682.65 73.81.64 13.85.36 47.8-7.45+8.8 0.398+0.36+3.64 15.75+3.590.59+14.25 66.868.661.34 0.2516.24 (1.250.125)8 3.723.56.283.5 36.83.96.1 15.613.115.615.62.14.87.8780.52 324.9 0.9 1.691.
8、3+2.50.4 1.25322.5 96.510596.5 0.41.2+1.80.413.63.5-3.63.5 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
9、.14=1.254= 6.32.1= 0.924= 61.2=0.48= 7.63.8= 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=
