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      <title>6A_BÀI 16: PHEP NHÂN SO NGUYÊN(TIET 2) by Thầy Khoa Phương</title>
      <link>https://padlet.com/khoavnkg/5zv54mwh3awwptn1</link>
      <description>Mời cac emtham  gia cung hoc nhé!</description>
      <language>en-us</language>
      <pubDate>2021-12-31 06:09:01 UTC</pubDate>
      <lastBuildDate>2023-10-13 14:38:46 UTC</lastBuildDate>
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         <author>khoavnkg</author>
         <link>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969482119</link>
         <description><![CDATA[<div><strong>Luyện tập 3 trang 72&nbsp;<br></strong><br></div><div><strong>1. </strong>a) Tính giá trị của tích<br>&nbsp;P = 3. (- 4). 5. (- 6).&nbsp;<br><br></div><div>&nbsp; &nbsp; b) Tích P sẽ thay đổi thế nào nếu ta đổi dấu tất cả các thừa số?<br><br></div>]]></description>
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         <pubDate>2021-12-31 06:11:17 UTC</pubDate>
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         <title></title>
         <author>khoavnkg</author>
         <link>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969482156</link>
         <description><![CDATA[<div><strong>2. </strong>Tính 4. (-39) - 4. (-14).</div>]]></description>
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         <pubDate>2021-12-31 06:11:22 UTC</pubDate>
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         <title></title>
         <author>khoavnkg</author>
         <link>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969482199</link>
         <description><![CDATA[<div><strong>Bài 3.35 trang 72 <br></strong><br></div><div>Tính một cách hợp lí:<br><br></div><div>a) 4.(1 930 + 2 019) + 4.(-2 019);&nbsp;<br><br></div><div><br><br></div>]]></description>
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         <pubDate>2021-12-31 06:11:30 UTC</pubDate>
         <guid>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969482199</guid>
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         <title></title>
         <author>khoavnkg</author>
         <link>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969482247</link>
         <description><![CDATA[<div><strong>Bài 3.37 trang 72 <br></strong><br></div><div>Tính giá trị của biểu thức sau một cách hợp lí:<br><br></div><div>a) (- 8).72 + 8.(-19) - (-8);&nbsp;<br><br></div><div><br><br></div>]]></description>
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         <pubDate>2021-12-31 06:11:36 UTC</pubDate>
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         <title>Thúy an</title>
         <author></author>
         <link>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969559446</link>
         <description><![CDATA[<div>1<strong>.</strong> a) P = 3. (- 4). 5. (- 6)&nbsp;<br><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 3. (- 6). (- 4). 5<br><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = [3. (- 6)]. [(- 4). 5]<br><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = [- (3. 6)]. [- (4. 5)]<br><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (- 18). (- 20)<br><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 18. 20<br><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 360<br><br></div><div>&nbsp; &nbsp; b) Nếu ta đổi dấu tất cả các thừa số, ta có:<br><br></div><div>P<em>' </em>= (- 3). 4. (- 5). 6 = [(- 3). (- 5)]. [4. 6] = 3. 5. 4. 6 = (3. 6). (5. 4) = 18. 20 = 360<br><br></div><div>Nên P = P<em>'<br></em><br></div><div>Do đó tích P không thay đổi.</div><div><br></div>]]></description>
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         <pubDate>2021-12-31 09:00:14 UTC</pubDate>
         <guid>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969559446</guid>
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      <item>
         <title>N. Quỳnh</title>
         <author>nguyenthinhuquynh2514</author>
         <link>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969559672</link>
         <description><![CDATA[<div>1a) P=3 . (-4) . 5 . (-6).<br>=[(-4) . 5] .[ 3 . (-6)]<br>=(-20) . (-18)<br>=20 . 18<br>=360.</div>]]></description>
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         <pubDate>2021-12-31 09:00:41 UTC</pubDate>
         <guid>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969559672</guid>
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         <title>Thúy an</title>
         <author></author>
         <link>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969561924</link>
         <description><![CDATA[<div><br><br></div><div><strong>2)</strong> 4. (-39) - 4. (-14)&nbsp;<br><br></div><div>&nbsp;= 4. [-39 – (- 14)] &nbsp; <br><br></div><div>&nbsp;= 4. (- 39 + 14)<br><br></div><div>&nbsp;= 4. [- (39 – 14)]&nbsp;<br><br></div><div>&nbsp;= 4. (-25)&nbsp;<br><br></div><div>&nbsp;= - (4. 25)<br><br></div><div>&nbsp;= - 100.<br><br></div>]]></description>
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         <pubDate>2021-12-31 09:04:46 UTC</pubDate>
         <guid>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969561924</guid>
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         <title>N.Quỳnh</title>
         <author>nguyenthinhuquynh2514</author>
         <link>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969563389</link>
         <description><![CDATA[<div>a) 4.(1930+2019)+4.(-2019).<br>=4.[1930+2019+(-2019)]<br>=4.(1930+0)<br>=4.1930<br>=7720.</div>]]></description>
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         <pubDate>2021-12-31 09:07:57 UTC</pubDate>
         <guid>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969563389</guid>
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         <title>khánh linh</title>
         <author></author>
         <link>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969564126</link>
         <description><![CDATA[<div>4.(1930+2019)+4.(-2019)<br>=4.(1930+2019-2019)<br>=4.(1930+0)<br>=4.1930<br>=7720</div>]]></description>
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         <pubDate>2021-12-31 09:09:39 UTC</pubDate>
         <guid>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969564126</guid>
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         <title>Thúy an</title>
         <author></author>
         <link>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969564150</link>
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         <pubDate>2021-12-31 09:09:41 UTC</pubDate>
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         <title></title>
         <author></author>
         <link>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969564387</link>
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         <pubDate>2021-12-31 09:10:17 UTC</pubDate>
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      <item>
         <title>Trần Hữu Khang</title>
         <author></author>
         <link>https://padlet.com/khoavnkg/5zv54mwh3awwptn1/wish/1969564471</link>
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         <pubDate>2021-12-31 09:10:29 UTC</pubDate>
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