Question

grupeaza convenabil factorii pentru a calcula rapid ma poate ajuta cineva va rog

Answer 1

2×783×5 =(2×5)×783=10×783=7830

4×74×25= (4×25)×74=100×74=7400

25×4×84= (25×4)×84=100×84= 8400

2×798×5 =(2×5)×798= 10×798=7980

5×996×2= (5×2)×996 =10×996 =9960

SUCCES!

Answer 2

2x783x5=783×(2×5)=
=783×10=7 830
4×75×25=75×(4×25)=
=75×100=7 500
25×4×84=(25×4)×84=
=100×84=8 400
2×798×5=798×(2×5)=
=798×10=7 98
5×996×2=996×(2×5)=
=996×10=9 960