Obliczcie mi to pls, DAJE NAJ!
to ulamki gdyby co
a) 2 4/5+1/4=
b) 1 3/4-3/8=
c) 2 2/9×1 3/5=
d) 2 2/5:1 1/5=
e) 2 2/5+4/3=
f) 1 4/5-7/10=
g) 2 1/7× 1 17/15=
h) 3 1/2: 1 3/4=
to ulamki gdyby co
a) 2 4/5+1/4=
b) 1 3/4-3/8=
c) 2 2/9×1 3/5=
d) 2 2/5:1 1/5=
e) 2 2/5+4/3=
f) 1 4/5-7/10=
g) 2 1/7× 1 17/15=
h) 3 1/2: 1 3/4=
Odpowiedź:
a)
2 4/5 + 1/4 = 2 16/20 + 5/20 = 2 21/20 = 3 1/20
b)
1 3/4 - 3/8 = 1 6/8 - 3/8 = 1 3/8
c)
2 2/9 : 1 1/5 = 20/9 : 6/5 = 20/9 * 5/6 = 10/9 * 5/3 = 50/27 = 1 13/27
d)
2 2/5 : 1 1/5 = 12/5 : 6/5 = 12/5 * 5/6 = 2 * 1 = 2
e)
2 2/5 + 4/3 = 2 6/15 + 20/15 = 2 26/15 = 3 11/15
f)
1 4/5 - 7/10 = 1 8/10 - 7/10 = 1 1/10
g)
2 1/7 * 1 17/15 = 15/7 * 32/15 = 1/7 * 32 = 32/7 = 4 4/7
h)
3 1/2 : 1 3/4 = 7/2 : 7/4 = 7/2 * 4/7 = 1 * 2 = 2
Rozwiązanie w załączniku.