Question

Am un exercitiu cu 8x(23+14)=, (123+12)x3=, (120-16)x4=, 5x(325-250)=,
(42+18)x16=, 11x(32-15)=, 15x(84-29)= si zice "Calculeaza in doua moduri" va rog

Answer 1

8x(23+14)= 8x23+8x14 = 184+112 = 296

8x(23+14)=8x37 = 296

(123+12)x3= 123x3+12x3 = 369+36 = 405

(123+12)x3=135x3 = 405

(120-16)x4=120x4-16x4 = 480-64 = 416

(120-16)x4= 104x4 = 416

5x(325-250)=5x325-5x250 = 1625-1250= 375

5x(325-250)=5x75 = 375

(42+18)x16=42x16+18x16 = 672+ 288 = 960

(42+18)x16=60x16 = 960

11x(32-15)=11x32-11x15 = 352-165 = 187

11x(32-15)=11x17 = 187

15x(84-29)=15x84-15x29 = 1260-435 = 825

15x(84-29)=15x 55 = 825