22×35+33×7
=11*2*35+11*3*7
=11*70+11*21
=11*(70+21)
=11*(90+1)
=11*90+11*1
=990+11
=1001
另一种
22×35+33×7
=22*5*7+33*7
=110*7+33*7
=（110+33）*7
=1001