Question

5.6x9.9＋56的简便计算怎么写?

Answer 1

5.6×9.9+56
＝5.6×（10-0.1）+56
＝5.6×10-5.6x0.1+56
＝56-0.56+56
＝112-0.56
＝111.44

Answer 2

5.6x9.9＋56的简便计算怎么写?
5.6x9.9＋56
=56x0.99＋56
=56×(0.99+1)
=56×1.99
=111.44

Answer 3

5.6*9.9+56
=5.6*（10-0.1）+56
=5.6*10-5.6*0.1+56
=112-0.56
=111.44

Answer 4

5.6*（10-0.1）+56
=56*2+5.6*0.1
=112+0.56
=112.56即为所求

Answer 5

5.6*9.9+56
=5.6*(10-0.1)+56
=5.6*10-5.6*0.1+56
=56+56-0.56
=112-0.56
=111.44
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