小学数学简便运算练习题66379

(13X8) X125 8 + 276X62 20X (17X5) 14X20X5 276X3 102X26 8X14X125X6 25 X (40X32) (5X7) X80 16X25X5X4 2

(13X8)X125 8+276X62 20X(17X5) 14X20X5 276X3 102X26 8X14X125X6 25X(40X32) (5X7)X80 16X25X5X4 25X13X4 3X12X5 23X4X5 40X7X3X5 2843-598 25X6X4X5 3475-1999 (8X6)X125 4X8X25X125 36X25 259+468+741+532 3700-2185-815 28X25 12X25 125X(8+4)