13.9×5.43+13.9×5.43
问题描述:
13.9×5.43+13.9×5.43
简便计算
答
13.9×5.43+13.9×5.43
=2×(13.9×5.43)
=2×13.9×5.43
=27.8×5.43
=120.954
或者
13.9×5.43+13.9×5.43
=13.9×(5.43+5.43)
=13.9×10.86
=150.954