شاه کلید نکات
شاه کلید سوال
با توجه به نتایج بالا حاصل عبارت ها را به دست آورید.
\(\begin{array}{l}( + 5) + ( - 2) = \\\\( + 9) - ( + 7) = \\\\ - 10 - ( - 20) = \\\\ - 3 + 9 = \\\\80 - 30 = \\\\ - 18 + 10 = \\\\( + 5) + ( - 7) = \\\\( + 10) - ( - 20) = \\\\( - 8) - ( - 4) = \\\\ - 200 + 100 = \\\\ - 20 + 10 = \\\\ - 40 + ( + 10) = \end{array}\)
\(\begin{array}{l}( + 5) + ( - 2) = + (5 - 2) = + 3\\\\( + 9) - ( + 7) = ( + 9) + ( - 7) = + (9 - 7) = + 2\\\\ - 10 - ( - 20) = - 10 + ( + 20) = + (20 - 10) = + 10\\\\ - 3 + 9 = + (9 - 3) = + 6\\\\80 - 30 = 50\\\\ - 18 + 10 = - (18 - 10) = - 8\\\\( + 5) + ( - 7) = - (7 - 5) = - 2\\\\( + 10) - ( - 20) = ( + 10) + ( + 20) = + (10 + 20) = + 30\\\\( - 8) - ( - 4) = ( - 8) + ( + 4) = - (8 - 4) = - 4\\\\ - 200 + 100 = - (200 - 100) = - 100\\\\ - 20 + 10 = - (20 - 10) = - 10\\\\ - 40 + ( + 10) = - (40 - 10) = - 30\end{array}\)
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