10: 2.4×56--8.5
=134.4--8.5
=125.9
11: 小麦粉 0.4×100=40
糖 0.2×100=20
盐 0.015×100=1.5
鸡蛋 0.15×100=15
12: ﹙56--48﹚×3.6
=8×3.6
=28.8
13: ⑴ 11×2+15.2×5
=22+76
=98
100>98
100够
⑵ 100--25.8×3
=100--77.4
=22.6
⑶ ﹙200--11﹚÷6
=189÷6
=31.5