20 questions
1580 + 3500 = ...
5080
4800
5800
4080
-5 + (-1) = ...
-4
-6
4
6
-3 + (-8) = ...
11
-11
5
-5
5 + (-2) =
3
-3
7
-7
2 + (-7) =
5
-5
9
-9
-9 + 3 =
-6
6
12
-12
-5 + 7 =
2
-2
12
-12
5160 + 2106 =
7266
8206
7626
8226
-6 + (-9) =
-15
15
3
-3
-10+(-1)=
-11
11
9
-9
-9+9=
0
18
-18
1
320+(-320)=
320
0
-640
640
-50+0=
0
-50
50
tak terhingga
-8+1=
-7
7
9
-9
-2+8=
6
-6
10
-10
10+(-5)=
5
-5
15
-15
6+(-7)=
-1
1
-13
13
0+(-17)=
17
-17
0
tak terhingga
-34+15=
19
-19
49
-49
19+(-57)=
-32
-35
-76
65