Question

3corn............5pâine............2 300g
4corn............2pâine .............1 200g
_______________________
1corn + 1pâine =?​

Answer 1

Explicație pas cu pas:



tutamihalca

17.03.2018

Matematică

Școala Primară (Clasele I-IV)

a fost răspuns

3cornuri...5paini=2300g ;4cornuri...2 paini=1200g;1corn...1paine=?g

2

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Răspuns

4,2/5

5



Jurconi

As

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3 cornuri...5 paini...2300g

4 cornuri...2 paini...1200g

Inmultim prima relatie cu 4, iar pe cea de a doua cu 3:

12 cornuri...20 paini...9200g

12 cornuri...6 paini...3600g

1) Cate paini sunt in plus?

20-6=14 (paini in plus)

2) Cate grame cantaresc cele 14 paini in plus?

9200-3600=5600 (grame in plus 14 paini)

3) Cate grame are o paine?

5600:14=400 (grame o paine)

4) Cate grame au 20 de paini?

20×400=8000 (grame 20 de paini)

5) Cat cantaresc 12 cornuri?

9200-8000=1200 (grame 12 cornuri)

6) Cate grame are 1 corn?

1200:12=100 (grame un corn)

Verificare:

3 cornuri...5 paini...2300g

3×100+5×400=300+2000=2300 g