人教版三年级数学上册《一个因数中间有0的乘法》PPT课件
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0+0+0+0+0+0+0=0(个) 0×7 =0(个) 7×0 =0(个)
0乘任何数都得0。
想:0×3= 0 9×0=0
0×0= 0
自主探究
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列式并计算。
电影院每天放映4场电影。每场最多卖278张票。 每天最多能有多少人看电影?
278×4=1112(人) 答:每天最多能有1112人看电影。
ห้องสมุดไป่ตู้境导入 7个盘子里一共还有多少个桃子?
自主探究
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总结提升
0和任何数相乘都得0。一个因数中间有0 的三位数乘一位数。不管因数中间是否有 0都要用这个一位数去乘多位数上每一位 上的数,即使十位上是0也要乘,当个位 积不满十时,十位上就要用0来占位。
作业设计
课本68页 练习十四
第1题
人教版小学数学三年级
一个因数中间有0的乘法
复习旧知
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运动场的看台分为8个区,每个区有604个座位。运 动场共有多少个座位?
604×8=4832(个)
600×8=4800 应该比4800人多一些。
604 × 38
48 3 2
0×8+3=3
答:运动场共有4832个座位。
学以致用 竖式计算。
4 02 × 16
2 412
2 05 × 24 8 20
103 × 29