课件24张PPT。两位数乘两位数的
笔 算西师大版三年级数学下册学习目标1.利用教材所提供的现实背景,帮助同学们理解两位数乘两位数的笔算的算理,并能正确计算两位数乘两位数。
2.引导同学们有效地利用原有知识推动新知识的学习。1112112 × 14 = (个)112 × 14 = (个)112 × 14 = (个)112 × 14 =168(个)112 × 14 =168(个)112 × 14 = (个)1 21 4×112 × 14 = (个)1 21 4×112 × 14 = (个)1 21 4×8112 × 14 = (个)1 21 4×8112 × 14 = (个)1 21 4×84112 × 14 = (个)1 21 4×84112 × 14 = (个)1 21 4×842112 × 14 = (个)1 21 4×842112 × 14 = (个)1 21 4×8421112 × 14 = (个)1 21 4×84218112 × 14 = (个)1 21 4×842186112 × 14 = (个)1 21 4×8421861112 × 14 =168(个)1 21 4×8421861