脫式計算:73.8×16-7.38×60 = = 1375＋450÷18×25 = = 368÷[1÷(2.1-2.09

題目：

脫式計算:73.8×16-7.38×60 = = 1375＋450÷18×25 = = 368÷[1÷(2.1-2.09)] = =
脫式計算:73.8×16-7.38×60
=
=
1375＋450÷18×25
=
=
368÷[1÷(2.1-2.09)]
=
=

解答：

73.8×16-7.38×60
=7.38×16×10-7.38×60
= 7.38×（160-60）
=7.38×100
=738
脫式計算:1375＋450÷18×25
=1375+25×25
=1375+625
=2000
368÷[1÷(2.1-2.09)]
=368÷（1÷0.01）
=368÷100
=3.68