1: ﹙14+125﹚×2÷2
=139×2÷2
=139
52÷2×﹙56+44﹚
=52÷2×100
=2600
2: 72÷2=36
3: 16×2=32
4: ﹙2+8﹚×6÷2
=10×6÷2
=30
﹙6+2﹚×4÷2
=8×4÷2
=16
﹙12+14﹚×13÷2
=26×13÷2
=169
﹙12+5﹚×4÷2
=17×4÷2
=34
6: 图2 和 图3
提交 重置