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Dạng $1:$ Thực hiện phép $tinh:$ 
Bài $1:$ Tính 
$\dfrac {3} {7}+\left(-\dfrac {5} {2}\right)+\left(-\dfrac {3} {5}\right)$ $b\right)\dfrac {4} {5}-\left(-\dfrac {2} {7}\right)-\dfrac {7} {10}$ $c\right)\left(\dfrac {11} {12}:\dfrac {33} {16}\right)\dfrac {3} {5}$ 
$e\right)12\left(-\dfrac {2} {3}\right)^{2}+\dfrac {4} {3}$ $f\right)\dfrac {4} {5}\left(\dfrac {7} {2}+\dfrac {1} {4}\right)^{2}$ 
$1\right)\left(\dfrac {9} {25}-2.18\right):\left(3\dfrac {4} {5}+0,2\right)$ 
$45^{10}5^{20}$ $g\right)\dfrac {.} {75^{15}}$ $h\right)$ $\dfrac {\left(0,8\right)^{5}} {\left(0,4\right)^{7}}$ $i\right)-$ $2^{15}9^{4}$ $\dfrac {.} {6^{6}.8^{3}}$ 

RADICAL FORM EXPONENTIAL FORM 
$\sqrt{15} $ 
$9^{1}$ 
$1$ $\left(3b^{2}\longdiv{1}$ 
$\sqrt{17} $ 
$\sqrt{\dfrac {m} {5}} $ 

$1x$ $\bar{12^{y}} $ $-$ 
$0$ 
$5$ $15^{-}$ 
10 17 
i5 
$99$ 
$α^{7}0$ P4 
$9\right)^{-}$ $30$ 

गत . 
सेप 116. $1^{\dfrac {1} {.2.3}+\dfrac {1} {2.3.4}+\dfrac {1} {34.5}+\dfrac {1} {45.6}}$ वरावर 
-4 
है- 

(1) 30 $\left(2\right)$ 310 1 
याएँ (3) $\dfrac {13} {30}$ (4) 317 0 
$117$ $\left(\dfrac {y^{2}\times 18^{2}} {3^{\pi }}\right)$ का मानं है- 
(1) 2/3 (2) 7 
को 
संख्या (3) 816 1 (4) $\dfrac {32} {243}$ 
- वड़ी $218$ $7^{3}7^{5}7^{11}7^{13}$ $,$ $,$ $,$ का ल० सं० क्या है ? 


ग दें, (1) 7 (2) 75 
(4) 
(3) 7" $\left(4\right)$ 713. 
$119$ $7^{-13}1$ $,γ=11$ $7^{18}$ का ल० सं० क्या 
है? 
करने (1) $7^{-1x}$ (2) $r^{13}$ 13 
(3) 7 (4) 7ll 
$120n$ $9^{3}9^{15}9^{2\right)}$ $,$ $,$ $9^{12}$ का मु०स० व्या है ? 
(1) 9' (2) 95 
(3) 90 (4) 92 

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