（冀教版）一年级数学上册课件 0的加减法
图片预览
文档简介
课件13张PPT。0的加减法五 10以内的加法和减法（第四课时） 小猫和鱼。小猫和妈妈一共钓了几条鱼？ 0 + 3 = 3 发生了什么事？ 3 - 3 = 0 妈妈怎么还不回来？小猫把3条鱼都吃光了。练一练422431440练一练2 + 3 = □ 5 - 3 = □
2 + 2 = □ 4 - 1 = □
5 - 2 = □ 4 - 3 = □练一练524331数学游戏1+3=45-0=5五 10以内的加法和减法
第四课时 0的加减法 拓展练习一、看图写算式。1 + 3 = 4 2 + 1 = 3–=422–=523+=235–=431 3 + 1 = 2 + 3 = 4 + 1 =
1 + 0 = 5 – 2 = 4 – 4 =
0 + 5 = 1 – 0 = 2 + 0 =
3 + 0 = 4 – 2 = 0 + 0 =
5 – 4 = 5 – 3 = 4 – 0 =
0 – 0 = 5 – 1 = 3 – 2 =二、比一比，看谁算得快又对。455153103012202441三、看图列式计算。+=145+=415+=303+=033四、竞赛场。 1 + 3 = 1 + 2 = 432 + 2 = 4 2 + 3 = 5 1 + 4 = 0 + 4 = 545 + 0 = 5 2 + 0 = 2 1. 在□里填数。四、竞赛场。1 + = 3 2 2. 想一想，填一填。0 + = 3 32 – = 1 10 + = 5 50 + = 4 40 + = 0 00 – = 0 04 – = 2 2
2 + 2 = □ 4 - 1 = □
5 - 2 = □ 4 - 3 = □练一练524331数学游戏1+3=45-0=5五 10以内的加法和减法
第四课时 0的加减法 拓展练习一、看图写算式。1 + 3 = 4 2 + 1 = 3–=422–=523+=235–=431 3 + 1 = 2 + 3 = 4 + 1 =
1 + 0 = 5 – 2 = 4 – 4 =
0 + 5 = 1 – 0 = 2 + 0 =
3 + 0 = 4 – 2 = 0 + 0 =
5 – 4 = 5 – 3 = 4 – 0 =
0 – 0 = 5 – 1 = 3 – 2 =二、比一比，看谁算得快又对。455153103012202441三、看图列式计算。+=145+=415+=303+=033四、竞赛场。 1 + 3 = 1 + 2 = 432 + 2 = 4 2 + 3 = 5 1 + 4 = 0 + 4 = 545 + 0 = 5 2 + 0 = 2 1. 在□里填数。四、竞赛场。1 + = 3 2 2. 想一想，填一填。0 + = 3 32 – = 1 10 + = 5 50 + = 4 40 + = 0 00 – = 0 04 – = 2 2