Unit 5 Information from Kite factory——Two、three digit divided by one digit (one) 风筝厂见闻——两、三位数除以一位数(一) Lesson 1 Kinds incomplete number Days from delivery 品种 未完成只数 离交货天数 The eagle kite sixty two 老鹰风筝 60 2 The swallow kite two hundred and forty six 燕子风筝 240 6 The buttterfly kite three hundred and twenty four 蝴蝶风筝 320 4 Please rest assured that the goods will be delivered on time. 请您放心，保证按时交货。 What questions can you ask? 你能提出什么问题？ Cooperative exploration 合作探索 On average, how many eagle kites must be made per day to complete the task on time? 1. 平均每天要做多少只鹰风筝才能按时完成任务？ Sixty divided by two is_____ 60÷2＝_______(只) I'll swing it with the stick. 我用小棒摆一摆。 Divide the six tens equally into two parts, each of which is equal to three tens, which is equal to 30. 把6个十平均分成2份，每份就是3个十，就是30. thirty times two is sixty 30×2＝60 Sixty divided by two is sixty 60÷2＝30 1. On average, how many swallow kites are made every day? 2.平均每天要做多少只燕子风筝？ two hundred and forty divided by six is ______ 240÷6＝________(只) Six times forty is two hundred and forty, two hundred and forty divided by six is forty. 6×40＝240,240÷6＝40。 Think of 240 as 24 tens.... 把240看作24个十...... Lesson 2 Group one 一组： We made 63 swallow kites in three hours. 我们3小时做了63只燕子风筝。 Group two 二组： We made 32 eagle kites in 2 hours. 我们2小时做了32只老鹰风筝。 Group three 三组： It takes 6 bamboo sticks to make a butterfly kite, and there are 75 bamboo sticks available. 做一个蝴蝶风筝用6根竹条，现有75根竹条。 What questions can you ask? 你能提出什么问题？ Cooperative exploration 合作探索 On average, how many swallow kites are made per hour in a group? 1. 一组平均每小时做了多少只燕子风筝？ sixty three divided by three is______ 63÷3＝________(只) I'll swing it with the stick. 我用小棒摆一摆。 You can do it in vertical form. 可以用竖式计算。 How many eagle kites did the two groups make per hour on average? 1. 二组平均每小时做了多少只老鹰风筝？ Thirty two divided by two is ______ 32÷2＝________(只) I'll swing it with the stick. 用小棒摆一摆。 You can also do it in vertical form. 还可以用竖式计算。 Is that right? I use the method of multiplying quotient and divisor to check...... 算得对吗？我用商与除数相乘的方法验算...... 3. How many butterfly kites can three groups make? How many bamboo sticks are left? 1. 三组能做多少只蝴蝶风筝？还剩几根竹条？ Seventy five divided by six is □...... □ 75÷6＝□(只)·····□(根) I'll do it in vertical form. 我用竖式计算。 Let me check. 我来验算。 Think about it: what should you pay attention to when checking a division with a remainder? 想一想：验算有余数的除法时，应该注意什么？ Lesson 3 725 peacock kites. A box of six. 725只孔雀风筝。 每盒6只。 246 swallow kites, 2 in each box. 438 eagle kites, each box of 3. 246只燕子风筝，每盒2只。 438只鹰风筝，每盒3只。 What questions can you ask? 你能提出什么问题？ Cooperative exploration 合作探索 1. How many boxes can swallow kite be packed altogether? 1. 燕子风筝一共能装多少盒？ two hundred and forty six divided by two is _____(box) 246÷2＝_______(盒) Think about how many digits the quotient is..... 先想一想商是几位数..... Why is it written one in the hundreds place? 1为什么写在商的百位上？ 2. How many boxes can the eagle kite pack? 1. 老鹰风筝一共能装多少盒？ four hundred and thirty eight divided by three is ____(box) 438÷3＝________(盒) I'll check...... 我会验算...... 3. How many boxes can peacock kites pack? 1. 孔雀风筝一共能装多少盒？ seven hundred and fifty two divided by six is ...... 752÷6＝ Think about it. How do you divide a three-digit number by a one-digit number? 想一想，怎样计算三位数除以一位数? Wisdom square 智慧广场 Triangle plus circle is twelve △＋○＝12 Triangle equals to circle＋ circle ＋circle △＝○＋○＋○ What is circle? What is triangle? ○＝？ △＝？ |
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