0.35乘0.81的验算

0.35乘0.81的验算

0.35乘以0.81=0.35乘以（0.8+0.01）=0.35乘以0.8+0.35乘以0.01=0.28+0.0035=0.2835，运用乘法分配律验算

钻石重量的国际计量单位是carat，中文为克拉，单位为ct;重量单位换算:1克拉=0.2克=100分。因此这个分是指重量单位，而不是长度方面的单位。为了让楼主更直观些了解不同重量的钻石直径有多大，请参看下表:标准圆钻型钻石重量(克拉)与腰围直径(毫米)对照表重量(ct)直径(m0.011.400.021.760.032.020.042.220.052.390.062.540.072.670.082.800.092.910.103.010.113.110.123.200.133.290.143.370.153.450.163.520.173.600.183.660.193.730.203.800.213.860.223.920.233.980.244.030.254.090.264.140.274.190.284.250.294.300.304.340.314.390.324.440.334.480.344.530.354.570.364.620.374.660.384.700.394.740.404.780.414.820.424.860.434.900.444.940.454.970.465.010.475.050.485.080.495.120.505.150.515.190.525.220.535.250.545.280.555.320.565.350.575.380.585.410.595.440.605.470.615.500.625.530.635.560.645.590.655.620.665.650.675.680.685.710.695.730.705.760.715.790.725.820.735.840.745.870.755.900.765.920.775.950.785.970.796.000.806.020.816.050.826.070.836.100.846.120.856.150.866.170.876.200.886.220.896.240.906.270.916.290.926.310.936.330.946.360.956.380.966.400.976.420.986.450.996.471.006.491.026.531.046.581.066.621.086.661.106.701.126.741.146.781.166.821.186.861.206.901.226.931.246.971.267.011.287.051.307.081.327.121.347.161.367.191.387.231.407.261.427.294.447.331.467.361.487.401.507.431.527.461.547.491.567.531.587.561.607.591.627.621.647.651.667.681.687.721.707.751.727.781.747.811.767.841.787.871.807.891.827.921.847.951.867.981.888.011.908.041.928.071.948.091.968.121.988.152.008.182.058.242.108.312.158.382.208.442.258.502.308.572.358.632.408.682.458.752.508.812.558.872.608.922.658.982.709.012.759.092.809.152.859.202.909.262.959.313.009.363.109.413.209.463.309.663.409.763.509.853.609.953.7010.043.8010.133.9010.224.0010.314.1010.394.2010.474.3010.554.4010.634.5010.714.6010.794.7010.874.8010.954.9011.025.0011.105.5011.466.0011.796.5012.117.0012.417.5012.708.0013.248.5012.989.0013.509.5013.7510.0013.98