Question

folositi proprietatile inmultirii pentru a calcula : 27*3+45*3= 25*3*4*10= 201*23-201*14=
3*27+3*53= 214*15-104*15+15*74=

Answer 1

27x3+45x3=3(27+45)=3x72=216
25x3x4x10=(25x4)x(3x10)=100x30=3000
201x23-201x14=201(23-14)=201x9=1809
3x27+3x53=3(27+53)=3x80=240
214x15-104x15+15x74=15(214-104+74)=15x184=2760

Answer 2

27 × 3 + 45 × 3 = 3 × (27+45) = 3×72 = 216

25 × 3 × 4 × 10 = (25 × 4)×(3×10) = 100 × 30 = 3000

201 ×  23-201 × 14 = 201×(23-14) = 201×9 = 1809

3 × 27 + 3 × 53 = 3×(27+53) = 3×80 = 240

214 × 15-104 × 15+15 × 74 = 15× (214-104+74) = 15×184 = 2760