脱式计算简便计算．37+3.6+47+6.63.4-411-7112.5×32×12.53.4×5.6+5.6×6.6910÷[12×（65-310）]．

Question

脱式计算简便计算．
(3)/(7)+3.6+(4)/(7)+6.6
3.4-(4)/(11)-(7)/(11)
2.5×32×12.5
3.4×5.6+5.6×6.6
(9)/(10)÷[(1)/(2)×（(6)/(5)-(3)/(10)）]．

Answer 1

（1）(3)/(7)+3.6+(4)/(7)+6.6
=（(3)/(7)+(4)/(7)）+（3.6+6.6）
=1+10
=11；

（2）3.4-(4)/(11)-(7)/(11)
=3.4-（(4)/(11)+(7)/(11)）
=3.4-1
=2.4；

（3）2.5×32×12.5
=2.5×（4×8）×12.5
=（2.5×4）×（8×12.5）
=10×100
=1000；

（4）3.4×5.6+5.6×6.6
=（3.4+6.6）×5.6
=10×5.6
=56；

（5）(9)/(10)÷[(1)/(2)×（(6)/(5)-(3)/(10)）]
=(9)/(10)÷[(1)/(2)×(9)/(10)]
=(9)/(10)÷(3)/(10)
=3．