脱式计算如下:
32十40÷2
=32十20
=52
101十203-200
=100+1十200十2-200
=300一200十3
=100十3
=103
45一42÷6
=45-7
=38
72十(53一28)
=72十25
=97
114一35一65
=114-(35十65)
=114一100
=14。…
脱式计算如下:
32十40÷2
=32十20
=52
101十203-200
=100+1十200十2-200
=300一200十3
=100十3
=103
45一42÷6
=45-7
=38
72十(53一28)
=72十25
=97
114一35一65
=114-(35十65)
=114一100
=14。…