问题
计算题
计算：5.6×69.32+138.64×0.05+693.2×0.43
答案
5.6×69.32+138.64×0.05+693.2×0.43
=5.6×69.32 +（138.64÷2）×（0.05×2）+（693.2÷10）×（0.43×10）
=5.6×69.32+69.32×0.1+69.32×4.3
=69.32 ×（5.6+0.1+4.3）
=69.32×10
=693.2
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