Question

4. Calculați, folosind factorul comun

a) 437 ∙ 109 − 437 ∙ 54 + 437 ∙ 203 =

b) 2011 ∙ 5 + 2011 ∙ 7 + 2011 ∙ 49 + 2011 ∙ 39 =

c) 2001 ∙ 197 + 2001 ∙ 2 + 2011 =

Answer 1

a) 437×109-437×54+437×203=112.309

437×(109-54+203)=112.309

437×258=112.309

b) 2011×5+2011×7+2011×48+2011×39=

2011×(5+7+48+39)=

2011×99=199.089

c)2001×197+2001×2+2011=

2001×(197+2+2011)=

2001×2210=4.422.210

Sper ca te-am ajutat!