Question

2)Completeaza cu numerele lipsa:

Answer 1

Răspuns:

Explicație pas cu pas:

12 : ? = 2*2

12 : ? = 4

12 : 3 = 4

_____________

15 : ? = 10 : 2

15 : ? = 5

15 : 3 = 5

_______________

12 : ? = 4*1

12 : ? = 4

12 : 3 = 4

_____________

18 : ? = 3*3

18 : ? = 9

18 : 2 = 9

______________

30 : ? = 5*2

30 : ? = 10

30 : 3 = 10

______________

24 : ? = 4*2

sper ca ai inteles cum gasesti numarul lipsa; te las sa rezolvi singur :-)

Answer 2

Explicație pas cu pas:

12:a=2×2

12:a=4

a=12:4

a=3

v:12:3=2×2

4 4

15:a=10:2

15:a=5

a=15:5

a=3

v:15:3=10:2

5 5

12:a=4×1

12:a=4

a=12:4

a=3

v:12:3=4×1

4 4

18:a=3×3

18:a=9

a=18:9

a=2

v:18:2=3×3

9 9

30:a=5×2

30:a=10

a=30:10

a=3

v:30:3=5×2

10 10

24:a=4×2

24:a=8

a=24:8

a=3

v:24:3=4×2

8 8