简便方法：49.8乘以2.73+2.73乘以50.3+0.273
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简便方法：49.8乘以2.73+2.73乘以50.3+0.273简便方法：49.8乘以2.73+2.73乘以50.3+0.273简便方法：49.8乘以2.73+2.73乘以50.3+0.27349.8
简便方法：49.8乘以2.73+2.73乘以50.3+0.273
简便方法：49.8乘以2.73+2.73乘以50.3+0.273
简便方法：49.8乘以2.73+2.73乘以50.3+0.273
49.8×2.73＋2.73× 50.3＋0.273
＝2.73×(49.8＋50.3)＋0.273
＝2.73×(100+0.1)＋0.273
＝273+0.273+0.273
＝273.546
简便方法：49.8乘以2.73+2.73乘以50.3+0.273
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