Odpowiedź:
1.
75 + 6 = 81
90 + 6 = 96
30 + 6 = 36
15 + 6 = 21
26 + 6 = 32
2.
75 : 4 = 75/4 = 18 i 3/4 = 18,75
90 : 4 = 90/4 = 22 i 2/4 = 22,5
30 : 4 = 30/4 =7 i 2/4 = 7,5
15 : 4 = 15/4 = 3 i 3/4 = 3,75
26 : 4 = 26/4 = 6 i 2/4 = 6 i 1/2 = 6,5
3.
a)
44 : 2 = 22
b)
x/3 = 13
x - szukana liczba = 3 * 13 = 39
39 : 3 = 13
c)
24x = 48
x - szukana liczba = 48 : 24 = 2
2 * 24 = 48