Question

Calculează, grupând convenabil factorii.
A. 13x2x25=
50x13x2
B.4x76x25=
2x45x50
C.4x16x50
15x38x2

Ajutor dau coroana! ​

Answer 1

Răspuns:

13×25=325×13

50×2×13

45×50×2

16×50

38×15×2

Answer 2

Răspuns:

A. 13x(2x25)=13×50=650

50x13x2=(50×2)×13=100×13=1300

B.4x76x25=(4×25)×76=100×76=7600

2x45x50=(2×50)×45=100×45=4500

C.4x16x50=(4×50)×16=200×16=3200

15x38x2=(15×2)×38=30×38=1140