Question

2
Completează casetele cu numerele potrivite:
30 + 20 = 50 + 20
70 + 30 = 50 +
60 +
= 30 + 40
20 + 60 = 30 +
20 +
= 60 + 30
60 +
= 80 + 20
+ 10 = 20 + 20
90 + 10 = 40 +​

Answer 1

Răspuns:

30+20=50+20

70+30=50+50

60+10=30+40

20+60=30+50

20+70=60+30

60+40=80+20

30+10=20+20

90+10=40+60

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