用递等式计算(能简算的要简算)
(10﹣![]() ![]() |
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3.7×![]() ![]() |
(![]() ![]() |
计算,能简便的要简便.
14.5×64﹣64×4.5
2.5×32×12.5×9﹣8÷
×(
÷
+
)
(南雄市)已知a、b互为倒数,c和d互为相反数,x绝对值是3,求x2+(c+d)2011+(ab)2012的值.
直接写得数。
()×2= 28×25=
= 25+15×
=
0.75×=
= ﹣|﹣
|= (+4.5)+(﹣4.5)=
试题篮
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