Explicație pas cu pas:
A) 10+10 : 10 - 10 =
10:10= 1
10+1 - 10 =
11-10 = 1
A) 1
B) 3x7+42:2-42+5 =
3×7=21
42:2 = 21
21 + 21- 42+5 =
42 - 42 = 0
0 +5 = 5
B) 5
C) 12 : 3 +1+ 25 : 5 x 40: 10 =
12:3 = 4
25 :5 = 5
5 x 40 = = 200
200: 10 = 20
4+ 1 + 20 = 25
C) 25
D) 2 + 15 x 4 : ( 120 : 5x 22) +13 x 11 =
120 : 5 = 24
24 x 22 = 528
2 + 60 : 528 + 143