六年级简算..急急..

5.6×69.32＋138.64×0.05＋693.2×0.43
=5.6×69.32＋69.32×2×0.05＋69.32×4.3
=69.32×(5.6+2×0.05+4.3)
=69.32×10
=693.2

5.6×69.32＋138.64×0.05＋693.2×0.43
=5.6×69.32＋138.64×0.05＋69.32×4.3
=(5.6+4.3)×69.32+138.64×0.05
=9.9×69.32+6.932
=9.9×69.32+69.32×0.1
=（9.9+0.1）×69.32
=693.2

5.6×69.32＋138.64×0.05＋693.2×0.43
=5.6×69.32＋69.32×2×0.05＋69.32×10×0.43
=69.32×(5.6+2×0.05+10×0.43)
=69.32×(5.6+0.1+4.3)
=69.32×10
=693.2

倒
不是吧
这个也用"知道"
5.6×69.32＋138.64×0.05＋693.2×0.43
=5.6×69.32＋69.32×2×0.05＋69.32×4.3
=69.32×(5.6+2×0.05+4.3)
=69.32×10
=693.2

结果是693.2