Question

Oblicz w pamięci.
a) 23-23
14-0
72-32
b)
70-30
47-20
58-40
c)
34-19
35-27
72-38
d)
90-24
82-36
65-27

Answer 1

Odpowiedź:

a)

23-23=0

14-0=0

72-32=40

b)

70-30=40

47-20=27

58-40=18

c)

90-24=66

82-36=46

65-27=38