Question

2* Incercuiește răspunsul corect:
a) 4 x 5 + 3 x 4 - 4 x 4 + 2 x 3 =
b) 4 x 5 + 3 x 4 - 3 x 2 + 4 + 2 =
20
21
22
23
29
30
31
32
1
2
3
4
c)2 + 2 x 3-2 x 2-2 x 1 =
d) 2 + 2 + 3 x 5 - 1 x 2 + 0 x 2 =
18
17
19
20
Află termenul necunoscut:​

Answer 1

Răspuns:

4 x 5 + 3 x 4 - 4 x 4 + 2 x 3 =

20+12-16+6=32-16+6=16+6=22

4 x 5 + 3 x 4 - 3 x 2 + 4 + 2 =

20+12-6+4+2=32-6+4+2=26+4+2=30+2=32

c)2 + 2 x 3-2 x 2-2 x 1 =

2+6-4-2=8-4-2=4-2=2

2 + 2 + 3 x 5 - 1 x 2 + 0 x 2 =

2+2+15-2+0=4+15-2=19-2=17