Question

99*11+33*67的简便计算

Answer 1

3*33*11+33*67
=33*33+33*67
=33*(33+67)
=33*100
=3300

Answer 2

99*11+33*67=33×3×11+33×67
=33×(3×11+67)
=33×(33+67)
=33×100
=3300