Question

Calculează si verifica prin:
a)adunare:
52+23=75 76-54=22 38-13=25

b)scădere
32+45=77 57-33=22 48+11=59

c)adunare si scădere
13+54=67 96-42=54 74-23=51

Answer 1

v=verificare

a)52+23=75
v:23+52=75

76-54=22
v:22+54=75

38-13=25
v:25+13=38



b)32+45=77
v:77-45=32 sau 77-32=45

57-33=24
v:57-24=33

48+11=59
v:59-11=48 sau 59-48=11


c)13+54=67
v:67-54=13
67-13=54
54+13=67

96-42=54
v:96-54=42
42+54=96

74-23=51
v:51+23=74
74-51=23

sper ca te-am ajutat