U5、 Green action - addition and subtraction within hundred (a) 五、绿色行动——100以内的加减法(一) Lesson One 第一课 Liangliang 亮亮 I watered twenty-six tree. 我浇了26棵。 Dongdong 东东 I watered three tree. 我浇了3棵。 Fangfang 芳芳 I watered thirty tree 我浇了30棵。 What questions can you ask? 你能提出什么问题? You said I said 你说我讲 How many flowers have bright and east poured? 亮亮和东东一共浇了多少棵花? twenty-six plus three equals 26+3= (棵) twenty-seven、 twenty-eight、 twenty-nine 27、28、29。 I'll set it up, set it up. 我来摆一摆，拨一拨。 Six plus three is nine 6+3=9 Twenty plus nine equals twenty nine 20+9=29 How many flowers did Liang Liang and Fang Fang pour? 亮亮和芳芳一共浇了多少棵花? Twenty-six plus thirty equals 26+30= (棵) thirty-six、 forty-six、 fifty-six 36、46、56。 I'll set it up, set it up. 我来摆一摆，拨一拨。 Twenty and thirty equals fifty 20+30= 50 Fifty plus six equals fifty-six 50+6= 56 Think about it: what's the difference between twenty-six plus three and twenty-six plus thirty? 想一想:计算26+3和26+30时，有什么不同? Lesson two 第二课 We hung twenty-seven signs in one shift. 我们一班挂了27个牌子。 There are six left. 还剩下6个没挂。 Our second shift has already hung twenty-two brands, and there are eight left. 我们二班已经挂了22个牌子，还剩8个没挂。 What questions can you ask? 你能提出什么问题? You said I said 你说我讲 How many brands do you have to hang in a class? 一班一共要挂多少个牌子? Put together the twenty-seven that have been hung and the six that have not. 把已经挂的27个和没挂的6个合起来。 I can list... 我会列式.... Twenty - seven and six are equal 27+6= (个) Seven plus six equals thirteen 7+6=13 Twenty - seven and three are thirty 27+3=30 Twenty plus thirteen equals thirty three 20+13=33 Thirty plus three equals thirty three 30+3=33 How many brands do you have to hang in Class two? 二班一共要挂多少个牌子? Lesson three 第三课 Green recycling vehicle 绿色回收车 How many more than one class? 二班比一班多检了多少个? What more questions can you ask? 你还能提出什么问题? You said I said 你说我讲 How many more cans did the second shift pick up than the first? 二班比一班多捡了多少个易拉罐? I'll set it up. 我来摆一摆。 Do you know how many less one class than two? 你知道一班比二班少捡多少个吗? One class than the second class to pick up how many cans, that is. 一班比二班少捡多少个易拉罐，也就是. How many cans are picked up in Class 3 less than mineral water bottles? 三班捡的易拉罐比矿泉水瓶少多少个? How many mineral water bottles did the second class pick up less than the first class? 二班比一班少捡了多少个矿泉水瓶? Forty-five minus twenty equals 45- 20= (个) Forty minus twenty equals twenty 40-20=20 Twenty plus five equals twenty-five 20+5=25 Lesson four 第四课 Green Home Drawing Exhibition 绿色家园图画展 The first grade displays nine paintings. 一年级展出9幅画。 The second grade displays thirty paintings. 二年级展出30幅画。 The third grade displays thirty-eight paintings. 三年级展出38幅画。 Eight of us are in second grade 我们二年级来了8人 There are twenty-four of us in third grade. 我们三年级来了24人。 What questions can you ask? 你能提出什么问题? You said I said 你说我讲 How many more paintings are on display in the second grade than in the first grade? 二年级比一年级多展出多少幅画? Thirty minus nine 30-9= (幅) Ten minus nine equals one 10-9=1 Twenty plus one equals twenty one 20+1=21 It could also be: 还可以这样算: Thirty minus ten equals twenty 30-10=20 Twenty plus one equals twenty-one 20+1=21 How many fewer people are in the second grade than the third grade? 二年级比三年级少来了多少人？ twenty-four minus eight equals 24-8= (人) |
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