老师：Hello everyone, I'm Miss Chen from Jinli Primary School. Welcome to my class. Today we are going to learn Uniform Lesson 2. What's the missing number? Are you ready for class? Here we go. First, let's do sums. What's 12+ nine? 12+9 is 21. 20+14 is 34. 16+27 is 43. 13+17 is thirty. 11+28 is 39. 10+40 is 50.
老师：Look, the children are doing sums now. Listen, let's talk boys and girls. Look here. What's the missing number? Sorry, I don't know. Think it over. 16MINUS2 is fourteen. 8 minus two is six. The teacher says, what's the missing number? The children have no ideas about it. The teacher asks them to think it over, and then she says 16MINUS2 is fourteen. Look here, 16MINUS2 is fourteen, 8 minus two is six. Here, 8 minus two is six. Then what does the boy say? Listen. Oh, I see. The missing number is 8. What a clever boy.
老师：Now the boy knows the missing number is eight. 14MINUS6 is eight. So 8 shoes stand here, 8 is the missing number. Boys and girls, what are the missing numbers? Do you know? Think it over.
老师：Look, 90-52 is 38. 38 should be here. And 96-60 is 36. 36 should be here. And then 38 minus eight is thirty. SO30 should be here, and 30-28 is two. So, too, she'll stand here.
老师：38,36,30, and two other missing numbers. Are you clear? Next, please listen and repeat. Let's talk boys and girls. Look here. What's the missing number? Sorry, I don't know. Think it over? 16MINUS2 is fourteen. 8 minus two is six. Oh, I see. The missing number is 8. What a clever boy. Now we know all the missing numbers, right? Fantastic. Look, they are also doing sums. Listen. Work in pairs. What's 90-30? It's sixty. What's 90-30? Yes, it's sixty.
老师：90-30 is sixty. Next, let's do these sums. Look, what does the boy say, right? What's 100-50? It's 50. 100-50 is fifty. Try again. What's 76-45? It's 31. 76-45 is 31. Look, what's. 96-27? It's 69. 96-27 is 69. What's 87-39? It's 48. 87-39 is 48. Well done, boys and girls.
老师：Next, let's learn these numbers. Let's learn 66. seventy eighty ninety one hundred number， one more time listen i repeat again lets learn， sixty seventy eighty。 90. 90 hundred. 100. Number. Number. Try to read from 61 to 99 in English after class. Okay, let's practice more. Now match and say. Have a try.
老师：Let's check. 75-15 is say. sixty ninety eight minus twenty eight is。 70,100 minus ten is ninety. 83 minus three is eighty, 100-37 is 63. Then let's say it together, 75-15 is sixty. ninety eight， minus twenty eight is seventy one hundred minus ten is ninety eighty， three minus three is eighty。 100-37 is 63. Good job, boys and girls. Look at your homework. 1. Listen and read page fifty. 2. Do sums. That's all for today. See you next time. Goodbye.
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