35 . 34 + 35 . 86 + 6 . 75
= 35 . ( 34 + 86 ) + 450
= 35 . 120 + 450
= 4200 + 450
= 4650
35.34+35.86+6.75
=35.(34+86)+450
=35.120+450
=4200+450
=4650
Tính nhanh:
35 . 34 + 35 . 86 + 6 . 75
= 35.(34+86)+450
= 35.120+450
= 4200+450
= 4650