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ریاضی را آسان بیاموزیم - ضرب اعدادگویا(کلاس دوم وسوم)

ریاضی را حفظ نکنیم با تمرین کردن یاد بگیریم

ضرب اعدادگویا(کلاس دوم وسوم)

نویسنده :رضا سازمند
تاریخ:شنبه 27 آذر 1389-07:13 ب.ظ

ضرب اعدادگویا:
برای محاسبه حاصل ضرب اعداد گویا تا جایی که امکان دارد صورت کسرها را بر

مخرج ها ساده می کنیم،(صورت کسر اول را بر مخرج خودش ومخرج کسر دوم

وصورت کسر دوم را نیز بر مخرج کسر خودش وکسر اول ساده می کنیم)

در ادامه صورت های ساده شده را در هم ومخرج های ساده شده را در هم

ضرب می کنیم،حاصل بدست آمده،حاصل ضرب اعداد گویا می باشد.فقط قبل

از ساده کردن ،علامت های منفی را شمرده اگر تعداد آنها فرد بود حاصل منفی

واگر تعداد زوج بود حاصل علامت هامثبت می شود.




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