Question

calculează după model 78 ×43 + 78 × 435 +78 × 435

Answer 1

78×43+78×435+78×435=78×913=71214

Answer 2

(70×43)+(78×435)+(78×435)=71214
1)78×43=3354
2)78×435=33930
3)78×435=33930
4)3354+33930=37284
5)37284+33930=71214