99x11＋102x98、25x125x36x4x8、76x25+18x25+25x6、41x37-21x37、125x3x6x8、20x96x50、12x8x25

99x11＋102x98
=100X11-11+100X98+2X98
=1100+9800+196-11
=10900+185
=11085
25x125x36x4x8
=(25X4)X(125X8)X36
=100X1000X36
=3600000
76x25+18x25+25x6
=25X(76+18+6)
=25X100
=2500
41x37-21x37
=37X(41-21)
=37X20
=740
125x3x6x8
=(125X8)X3X6
=1000X18
=18000
20x96x50
=(20X50)x96
=1000x96
=96000
12x8x25
=12x2x(4x25)
=24x100
=2400

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