Oblicz. Pamiętaj o kolejności wykonywania działań.
2,5 + 2 3/4 x 6/11 =
145 1/2 - 4,2 : 0,03 =
(4,6 + 2 4/5) x (1 3/5 - 0,7) =
3 1/8 - 3 1/4 : 5 1/5 =
6,03 : 0,3 + 1,8 x 2,5 =
2 1/5 x 3 + 7,8 =
12 1/2 - 5,05 : 0,5 =
1 1/4 : 3 1/3 x 5/9 =
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2,5 + 2 3/4 x 6/11 = 2,5 + 11/4 x 6/11 = 5/2 +6/4 = 10/4 + 6/4 = 16/4 = 4
145 1/2 - 4,2 : 0,03 = 145 1/2 - 9/2 : 3/100 = 145 1/2 - 9/2 x 100/3 = 291/2 - 150/2 = 141/2 = 70.5
(4,6 + 2 4/5) x (1 3/5 - 0,7) = (4 6/10 + 2 4/5) x (8/5 - 7/10) = (4 6/10 + 2 8/10) x (16/10 - 7/10) = 6 14/10 x 9/10 = 74/10 x 9/10 = 666/100 = 6,66
3 1/8 - 3 1/4 : 5 1/5 = 25/8 - 13/4 : 26/5 = 25/8 - 13/4 x 5/26 = 25/8 - 5/8 = 20/8 = 2 1/4 = 2,25
6,03 : 0,3 + 1,8 x 2,5 = 20,1 + 4,5 = 24,6
2 1/5 x 3 + 7,8 = 11/5 x 3 + 7,8 = 33/5 + 7,8 = 6,6 + 7,8 = 14,4
12 1/2 - 5,05 : 0,5 = 12,5 - 10,1 = 2,4
1 1/4 : 3 1/3 x 5/9 = 5/4 : 10/3 x 5/9 = 5/4 : 50/27 = 5/4 x 27/50 = 27/40 = 0,675