This presentation is the property of its rightful owner.
Sponsored Links
1 / 15

假设法解分数应用题 通川区第八小学 吴培谋 PowerPoint PPT Presentation


  • 126 Views
  • Uploaded on
  • Presentation posted in: General

假设法解分数应用题 通川区第八小学 吴培谋. 今有鸡兔同笼,共 30 只头, 100 条腿,问鸡几只?兔有几只 ?. 假设法解分数应用题. 1 、 师傅与徒弟两人共加工零件 105 个,师傅加工零件的总数的 4∕7 与徒弟加工的零件总数的 4∕7 的和是多少? 2 、师傅与徒弟两人共加工零件 105 个,师傅加工零件的总数的 3∕8 与徒弟加工的零件总数的 3∕8 的和是多少?.  师傅与徒弟两人共加工零件 105 个,已知师傅加工零件的总数的 3∕8 与徒弟加工的零件总数的 4∕7 的和为 49 个,师、徒各加工零件多少个?.

Download Presentation

假设法解分数应用题 通川区第八小学 吴培谋

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


5791287


30 100

30100


5791287


5791287

1 1054747

21053838


5791287

105384749

(1)4/7

105X4/7=60()

60-49=11()

11(4/7-3/8)=56()

105-5649

5649


5791287

105384749

(2)3/8

105X3/8=315/8()

49-315/8=77/8()

77/8(4/7-3/8)=49()

105-4956

5649


5791287


5791287

  • 1

  • 4.81/32/51.72

(1)

(1.72-4.8X1/3)(2/5-1/3)=1.8()

4.8-1.8=3()


5791287

(2)

4.8X(2/5-1.72)(2/5-1/3)=3()

4.8-3=1.8()


5791287

  • 2

  • 641/41/346

(1)64-46=18()

(18-64X1/4)(1/3-1/4)=24()

64-24=40()


5791287

(2)64-46=18()

(64X1/3-18)(1/3-1/4)=40()

64-40=24()


5791287

3

7501/61/5710

(1)

[750X(1+1/6)-710] (1/5+1/6)=450()

450X(1-1/5)=360()

710-360=350(


5791287

(2)

710-750X(1-1/5)] (1/5+1/6)=300()

300X(1+1/6)=350( )

710-350=360()


5791287


5791287

193/82/5121


  • Login