Plus
1000+999+1
=2000
1000-49
=951
10*10*2
=200
9:3
=3
72
=49
10+10+2+99
=121
10-11
=-1
1000*9
=9000
10:2
=5
5*20
5987+43
=6030
66-100
=-44
10*10*10*0
=0
100:5
=20
50*40
=200
7,5+3,9
=11,4
1000-1000-1000
=-1000
500*9
=4500
100:4
=25
25:5
=5
3,3+3,4+3,5+3,7
=13,9
99-1-22-99
=-23
22*14
=308
350:2
=175
43*2
=96