11×22+0.22×3300+330×4.4简便方法是什么
问题描述:
11×22+0.22×3300+330×4.4简便方法是什么
答
11×22+0.22×3300+330×4.4
=11×11×2+11×11×(0.02×300)+11×11×30×0.4
=11×11×(2+6+12)
=121×20
=2420