16.75x5/8-3/4x5/8 简便计算
1x5+2x5+3x5+4x5+5x5… 麻烦给我一个公式.
用简便方法计算55²x5-45²x5
用简便方法计算下列各题(1)2^5x5^4 (3)8^8x(-四分之一)^12 (4)(-3)^5x(-三分之二)^5x
求3.95加1.2x5.2和2.3x4.8x0.5的简便计算,
6分之5x5分之3+7分之4+7分之3,简便计算
简便计算1/2+1/2x3+1/3x4+1/4x5+...+1/99x100
2.2x3.3+3.3x4.4+4.4x5.5 如何简便计算
一道简便计算数学题1X2+2X3+3X4+4X5...+n(n+1)一1X2+2X3+3X4+4X5...+2013X2
0.625+5/8x5+62.5%x2是多少 简便运算
1/1x2+1/2x3+1/3x4+1/4x5...1/2001x2002 简便计算
递等式计算,能简算的要简算.(1)0.89X10.1,(2)4.56X5.6+5.6X5.44,(3)92.8÷8÷1.
1/1x3+1/3x5+1/5x7+.+1/1997x1999 简便计算.