5/17x9/27+9/17x7/24的简便运算
5/17x9/27+9/17x7/24的简便运算
巧算:5/17x9/24+9/17x7/24 106x(1/105x104+1/105x106)
100x9.5x0.98+9.5x2简便运算
0.64x9.9 3.14x99+3.14 0.45x7.5-0.45x6.5 0.25x3.5x4x2用简便计算怎么算
24/17+(7/5+24/1)x7用简便方法计算
1/1x3+1/3x5+1/5x7+1/7x9+1/9x11=?
2/1x3+2/3X5+2/5x7=2/7x9+2/9x11
sin(x) ≈ x - x3/3!+ x5/5!- x7/7!+ x9/9!- …,要求最后一项的绝对值小于10-5,
奥数 简便运算41.2X8.1+11X9.25+53.7X1.9
小数乘法的简便计算56.5x9.9+56.5
3.52x0.79-0.173x7.9+1.79x0.21简便运算
(4.4x7.5x4.8)除以91.5x2.5x2.4)简便运算