Răspuns:
Succes!
Explicație pas cu pas:
a) 468+124=
mod 1 (468+124)÷2= 592÷2
=296
(468+124)×4=592×4
=2368
mod 2 (468+124)÷2=468÷2+124÷2
=234+62
= 296
(468+124)×4=468×4+124×4
=1872+496
=2368
b) 238+106=
mod 1 (238+106)÷2=344÷2
=172
(238+106)×4=344×4
=1376
mod 2 (238+106)÷2=238÷2+106÷2
=119+53
=172
(238+106)×4=238+4+106×4
=952+424
=1376
c) 1000+500=
mod 1 (1000+500)÷2=1500÷2
=750
(1000+500)×4=1500×4
=6000
mod 2 (1000+500)÷2=1000÷2+500÷2
=500+250
=750
(1000+500)×4=1000×4+500×4
=4000+2000
=6000
