Zadanie 9
Informacja nam potrzebna w zadaniu:
stopa = 1/3 jarda
cal = 1/36 jarda
a) 12 * 1/3 = 12/1 * 1/3 = 12/3 = 4
b) 19 * 1/3 = 19/1 * 1/3 = 19/3 = 6 1/3
c) 8 * 1/36 = 8/36 = 2/9
d) 26 * 1/36 = 26/36 = 13/18
e) 4 * 1/3 + 2 * 1/36 = 4/3 + 2/36 = 48/36 + 2/36 = 50/36 = 25/18 = 1 7/18
f) 2 * 1/3 + 4 * 1/36 = 2/3 + 4/36 = 24/36 + 4/36 = 28/36 = 14/18 = 7/9
Zadanie 10
W zadaniu jest napisane, że z pamięci, więc napisz tylko wynik, ale zapiszę tok rozumowania.
6 24/31 * 248 = (3 12/31 + 3 12/31) * 248 = 840 + 840 = 1680
3 12/31 * 124 = 3 12/31 * 248 * 1/2 = 840 * 1/2 = 420
3 12/31 * 249 = 3 12/31 * (248 + 1) = 3 12/31 * 248 + 3 12/31 = 840 + 3 12/31 = 843 12/31
