Question

4 Calculează rapid, grupând în mod convenabil factorii:
25 x 34 x 4 x 20 =
5 X 106 X 8 X 20 =
3 x 359 x 36 x 0 =
5 x 240 x 30 x 20 =
Coronaaa

Answer 1

(25 × 34) × (4 × 20) = 850 × 80 = 68 000

(5 × 106) × (8 × 20) = 530 × 160 = 84 800

(3 × 359) × (36 × 0) = 1077 × 0 = 0

(5 × 240) × (30 × 20) = 1200 × 600 = 720 000

Answer 2

Răspuns:

Calcul rapid :

(25•34)•(4•20) = 850•80 = 68000

(5•106)•(8•20) = 530•160 = 84800

(3•359)•(36•0) = 1077•0 = 0

(5•240)•(30•20) = 1200•600 = 720000

==EVERGREEN==