99*22+33*34

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99*22+33*34

99*22+33*34
99*22+33*34

99*22+33*34
99*22+33*34=33*11*6+33*(11*3+1)
=33*11*6+33*11*3+33
=33*11*(6+3)+33
=33*99+33
=33*(99+1)
=33*100
=3300.

呃,O__O"…

99*22+33*34
=33*3*22+33*34
=33*(66+34)
=33*100
=3300

33*(3*22+1*34)=33*100=3300

99*22+33*44
=(100-1)*22+33*44
=2200-22+33*44
=2200+22*(33*2-1)
=2200+22*65
=2200+1430
=3630