2,55 : (8,2:4-2)= 2,55:(2,05-2)=2,55:0,05=51 10x (1oo,5 -16,1: 1/5)=10*(100,5-80,5)=10*20=200 3 3/4 : 15 x 1000=15/4*1/15*1000=1/4*1000=250 1000- 4/5: 0,8=1000-1=999 37,1 : (4-3,9)=37,1/0,1=371 (7-4 4/5) x (17 3/5 + 12 , 4) =(35/5-24/5)*(88/5+12,4)=11/4*30=2,75*30=82,5 0,232 : 0,4 x 100=0,58*100=58 12000+6 2/5 x 5 5/8 =12000+6,4*5,6=12000+35,84=12035,84 (500,15 + 9) :0,01=509,15/0,01=50915 330+ 1 3/5 x 60=330+1,6*60=330+96=426 3,6 x 60 - 1,3 x 20=216-26=190
2,55 : (8,2:4-2)=2,55(2.05-2)=2,55:0,05=51 10x (1oo,5 -16,1: 1/5)=10*(100,5-80,5)=10*20=200 3 3/4 : 15 x 1000=3³/₄:15*1000=¹⁵/₄:15*1000=¹⁵/₄*¹/₁₅*1000=¹/₄*1000=250 1000- 4/5: 0,81000-⁴/₅:⁸/₁₀==1000-⁴/₅*¹⁰/₈=1000-1=999 37,1 : (4-3,9)=37,1:0,1=371 (7-4 4/5) x (17 3/5 + 12 , 4) =(6⁵/₅-4⁴/₅)*17³/₅+12⁴/₁₀)=2¹/₅*(17⁶/₁₀+12⁴/¹⁰)=2¹/₅*30=¹¹/₅*³⁰/₁=66 0,232 : 0,4 x 100=0,58*100=58 12000+6 2/5 x 5 5/8 =12000+³²/₅*⁴⁵/₈=12000+36=12036 (500,15 + 9) :0,01=509,15:0,01=50915 330+ 1 3/5 x 60=330+1³/₅*⁶⁰/₁=330+⁸/₅*⁶⁰/₁=330+96=426 3,6 x 60 - 1,3 x 20=216-26=190
