Question

Calculează si verifica prin:
a)adunare:
52+23= 76-54= 38-13=


b)scădere
32+45= 57-33= 48+11=


c)adunare si scădere
13+54= 96-42= 74-23=

Answer 1

 a )52+23=75
v:23+52=75
76-54=22
v:22+54=76
38-13=25
v:25+13=38
b)32+45=77
v:77-45=32
57-33=24
v:57-24=33
48+11=59
v:59-11=48
c)13+54=67
v:67-54=13
v:54+13=67
96-42=54
v:54+42=96
v:96-54=42
74-23=51
v:74-51=23
v:51+23=74