乘法算式:
乘法口诀:
( )×( )=( )
42+8= 35-7= 26+30= 56-16+40=
75-40= 40+17= 9+24= 85-20-50=
80-6= 65-60= 91-8= 62-20+18=
56-30= 72+5= 40+28= 32-16+57=
7×8-16=8× 7×6+12=9×
5×6+18=6× 9×6-24=6×