Question

1) Doua revisite au impreuna 25 de pagini.Cite pagini are fiecare daca una are cu 5 pagini mai putine decit cealalta? 2)Bianca si Beatrice au impreuna 36 de timbre.Cite timbre are fiecare,stiind ca Bianca are cu 20 mai putine? 3)Valeria si Alecsa au impreuna 38 de papusi.Valeria are cu 18 paousi mai multe.Cite apusi are fiecare? va rog prin metoda reprezentarii grafice.

Answer 1

1) 25-5=20; 20:2=10( pagini prima revista) 10+5= 15(pagini a doua revista) 2) 36-20=16 16:2=8( timbre are Bianca ) 8+20=28(timbre are Beatrice). 3) 38-18=20 20:2=10( papusi are Alexa) 10+18=28(papusi are Valeria)

Answer 2

a|·····|
b|·····|5
2a=25-5=20
a=10
b=10+5=14

a|·····|
b|·····|20
2a=36-20
a=8
b=8+20=28

a|····|
b|·····|18
2a=38-18
a=20:2
a=10
b=10+18
b=28