4.38-3.28=
10-7.5=
0.32+3.2=
2.5÷100=
0.46×1000=
120÷5÷2=
328+199= 2.4+3.06= 24×12.5%= 4﹣﹣=
﹣= 3.2÷0.01= 3.5:1.4=﹣=