= \(-37+54-70-163+246\)
\(=\left(-37-163\right)+\left(54+24\right)-70\)
\(=-200+78-70\)
\(=-200+\left(78-70\right)\)
\(=-200+8\)
\(=-192\)
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-37+54+(-70)+ (-163)+246=?
(-37)+54+(-70)+(-163)+246
Tính:-3^2+left{-54:left[-2^8+7right]cdotleft(-2right)^2right}Tính hợp lí :31cdotleft(-18right)+31cdotleft(-81right)-31left(-12right)cdot47+left(-12right)cdot52+left(-12right)13cdotleft(23+22right)-3cdotleft(17+28right)-48+48cdotleft(-78right)+48cdotleft(-21right)
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Tính:
\(-3^2+\left\{-54:\left[-2^8+7\right]\cdot\left(-2\right)^2\right\}\)
Tính hợp lí :
\(31\cdot\left(-18\right)+31\cdot\left(-81\right)-31\)
\(\left(-12\right)\cdot47+\left(-12\right)\cdot52+\left(-12\right)\)
\(13\cdot\left(23+22\right)-3\cdot\left(17+28\right)\)
\(-48+48\cdot\left(-78\right)+48\cdot\left(-21\right)\)
Tính nhanh - 37 + 54 + -70 + -163 + 246
\(\left(627-138\right):\left(3x:2\right)=163\)
Tinh nhanh
\(164:\left\{192-\left[2^3\cdot15-\left(40-37\right)^2\right]+2021^0\right\}\)
bài 1:tínha)left(dfrac{-7}{15}-dfrac{27}{70}right)-left(dfrac{8}{15}+dfrac{43}{70}right)b)dfrac{3}{7}+left(dfrac{-1}{5}+dfrac{-3}{7}right)c)left(4-dfrac{12}{5}right).dfrac{25}{8}-dfrac{2}{5}:dfrac{-4}{25}d)left(dfrac{-5}{24}+dfrac{3}{4}-dfrac{7}{12}right):left(-dfrac{5}{16}right)e)dfrac{-5}{7}.dfrac{2}{11}+dfrac{-5}{7}.dfrac{9}{11}g)dfrac{6}{7}+dfrac{5}{4}:left(-5right)-dfrac{-1}{28}.left(-2right)^2
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bài 1:tính
a)\(\left(\dfrac{-7}{15}-\dfrac{27}{70}\right)-\left(\dfrac{8}{15}+\dfrac{43}{70}\right)\)
b)\(\dfrac{3}{7}+\left(\dfrac{-1}{5}+\dfrac{-3}{7}\right)\)
c)\(\left(4-\dfrac{12}{5}\right).\dfrac{25}{8}-\dfrac{2}{5}:\dfrac{-4}{25}\)
d)\(\left(\dfrac{-5}{24}+\dfrac{3}{4}-\dfrac{7}{12}\right):\left(-\dfrac{5}{16}\right)\)
e)\(\dfrac{-5}{7}.\dfrac{2}{11}+\dfrac{-5}{7}.\dfrac{9}{11}\)
g)\(\dfrac{6}{7}+\dfrac{5}{4}:\left(-5\right)-\dfrac{-1}{28}.\left(-2\right)^2\)
Tính nhanh nếu có thể:
a) \(126+\left(-20\right)+2004+\left(-106\right)\)
b) \(70+69+68+...+1+0+\left(-1\right)+\left(-2\right)+...+\left(-70\right)\)
MỌI NGƯỜI LÀM ĐẦY ĐỦ GIÚP MÌNH NHA, KHÔNG LÀM TẮT .
Tính nhanh:
\(\left(-37-17\right)\cdot\left(-9\right)+35\cdot\left(-9-11\right)\)
\(\left(-25\right)\cdot\left(75-45\right)-75\left(45-25\right)\)