adding
360+70
430
690-40
650
what shape has 6 sides
hexgon
5x5
25
500+30+6
532
590+70
660
999-33
65
what shape has 4 sides
square
2x5
10
700+60+5
765
398+24
422
234-234
0
what shape has 3 sides
trangle
45x1
45
500+30+2
532
477+677
1244
123-12
111
what shape has 4 sides but not a square
rombos
90x2
180
400+20+1
421
790+290
1080
400
what shape has 5 sides
pentgon
90x4
360
200+20+2
222