Question

129+78+67

脱式计算
129+32×14
480÷6÷8
40.5-16.8+20.6
17.78+67.45-31.5．

Answer 1

（1）129+32×14
=129+448
=577

（2）480÷6÷8
=80÷8
=10

（3）40.5-16.8+20.6
=23.7+20.6
=44.3

（4）17.78+67.45-31.5
=85.23-31.5
=53.73