脱式计算。 9.12÷2.4×(3.6÷0.9) (32.4-11.6)÷0.64+7.5 0.1÷1+1÷0.8-0.1 3.6×1.25+0.32÷0.4
6-3=3+3=7-5=5+2=
9-4=9-5=4+5=
10-4=10-6=4+6=
5+2=7-5=7-2=
4+1=5-1=5-4=