Question

Intr-un strat 6 randuri cu panselute .Pe fiecare rand sunt 7 panselute albe,9 galbene si 14 violet.Aflati numarul total al panselutelor.


Calculati dupa modelul dat.

5x8+5x12=5x(8+12)=5x20=100


a)3x7+3x3

4x13+4x12

5x24+5x26


b)2x13+2x17

2x21+2x24

4x15+4x10


c)3x146+3x154

4x97+4x103

6x11+6x89


La un concurs au participat 16 echipaje.Fiecare echipaj este format din 6 baieti si 4 fete.Cati copii au participat la concurs?

Answer 1

a) 5*(7+3)=5*10=50 4*(13+12)=4*25=100 5*(24+26)=5*50=250 b) 2*(13+17)=2*30=60 2*(21+24)=2*45=90 4(15+10)=4*25=100 c). 3*(146+154)=3*300=900 4*(97+103)=4*200=800 6*(11+89)=6*100=600 2. 16*(6+4)=16*10=160 1. 6*7 + 6*9 + 6*14 = 6*(7+9+14)= 6*30=180 panselute