Odpowiedź:
Szczegółowe wyjaśnienie:
6.5.
a. 0,4+1,75 = 2,15
b. 0,75 + 3,015 = 3,765
c. 2,5 + 3,75 - 0,75 = 5,5
d. 1,5 - 0,225 + 0,375 = 1,65
6.6.
a. 2 3/10 + 4 1/3 = 2 9/30 + 4 10/30 = 6 19/30
b. 2 75/100 + 1 3/8 = 2 3/4 + 1 3/8 = 2 6/8 + 1 3/8 = 3 9/8 = 4 1/8
c. 18 125/1000 + 2 3/4 = 18 1/8 + 2 3/4 = 18 1/8 + 2 6/8 = 20 7/8
d. 5 4/10 - 3 2/3 = 5 2/5 - 3 2/3 = 5 6/15 - 3 10/15 = 4 21/15 - 3 10/15 = 1 11/15
e. 10 25/100 - 3/4 - 2 2/5 = 10 1/4 - 3/4 - 2 2/5 = 10 5/20 - 15/20 - 2 8/20 = 9 25/20 - 15/20 - 2 8/20 = 9 10/20 - 2 8/20 = 7 2/20 = 7 1/10
f. 20 5/10 - 18 3/4 + 1 4/10 = 20 20/40 - 18 15/40 + 1 16/40 = 2 5/40 + 1 16/40 = 3 21/40
