Question

Va rog!! calculeaza 257+3x(402-286)-143x4=
998-(129x2+235x3)=

Calculeaza in doua moduri 3x(97+82+56)=
(450-129-47)x2=
(190+238+205)x4=

4 efectueaza exercitiile
(316x3-360)+(1000-175x4)=
600-(128x6-234x3)x7=​

Answer 1

Răspuns:

1. 257+3×(402-286)-143×4 = 257+3×116-572 = 257+348-572 = 33

998-(129×2+235×3) = 998-(258+705) = 998-963 = 35

2. 3×(97+82+56) = 3×235 = 705

3×(97+82+56) = 3×97+3×82+3×56 = 291+246+168 = 705

(450-129-47)×2 = 274×2 = 548

(450-129-47)×2 = 450×2-129×2-47×2 = 900-258-94 = 548

(190+238+205)×4 = 190×4+238×4+205×4 = 760+952+820 = 2532

(190+138+205)×4 = 533×4 = 2152

3. (316×3-360)+(1000-175×4) = (948-360)+(1000-700) = 588+300 = 888

600-(128×6-234×3)×7 = 600-(768-702)×7 = 600-66×7 = 600-462 = 138

Sper că te-am ajutat! :)