+
10+20
30
10-5=
5
5x5
25
1000+10=
1010
20-15=
5
10x3
30
3333+7777=
10000
150-25=
125
1000x3=
3000
20+0=
20
4B-0=
4B
(2+3)x5
25
1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000+1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000=
1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
1000-1000=
0
3x500
1500