(11x9+11)X(111x999+111)x(7x11x13-1001)(...用简便方法计算
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(11x9+11)X(111x999+111)x(7x11x13-1001)(...用简便方法计算
(11x9+11)X(111x999+111)x(7x11x13-1001)(...用简便方法计算
(11x9+11)X(111x999+111)x(7x11x13-1001)(...用简便方法计算
(11x9+11)X(111x999+111)x(7x11x13-1001)
=(11x9+11)X(111x999+111)x0
=0
(11x9+11)X(111x999+111)x(7x11x13-1001)(...用简便方法计算
1x9+2=11,12x9+3=111,123x9+4=1111,求12345X9+6=?,1234567X9+?=11111111.
1x9+2=11 12x9+3=111 123x9+4=1111类似这种题有哪些
1+2+3+4+5=x x=8+3X9 x=11X9 x=99
用简便算法算一条算式:算式:5X999+5+99X7+7+3X9+3
2x8.1+11x9.25+537x0.
41.2x8.1+11x9.25+537x0.19=?
51.2x8.1+11x9.25+537x0.
4分之3x()=()x9分之11=()x6=0.125x()
用计算机计算:根号9x9+19,根号99x99+199,根号999x999+1999...请你猜测根号n个9xn个9+1 n个9
3.228x(-9)+(-3.272)x9-(-1.5)x9
第一题:(125x99+125)x16第二题:5x999+5+99x7+7+3x9+3+9
问一道简便计算题41.2x8.1+11x9.25+537x0.1941.2X8.1+11x9.25+537x0.19 要全过程!
(1-1/2x4)x(1-3/3x5)x(1-5/4x6)x(1-7/5x7)x(1-9/6x8)x(1-11/7x9)x(1-13/8x10)x(1-15/9x11)
1/5x7+1/7x9+1/9x11+1/11x13+…+1/23x25
奥数 简便运算41.2X8.1+11X9.25+53.7X1.9
1.简便运算 41.2x8.1+11x9.25+53.7x1.9
简便算法 51.2x8.1+11x9.25+537x0.19