Subtraction
5-4
1
5+5
10
1X3
3
square
100+50 and 100-50
150, 50
4
6+10
16
3X2
6
What has no straight lines
circle
200+200 and 200-200
400 and 0
15-6
9
60
5X4
20
What only has three sides
Triangle
16+8 and 16-8
24 and 8
42-13
29
132+50
182
100X6
600
Can every square be a rectangle?
True
40+33 and 40-33
73 and 7
84-26
58
576
20X5
100
What has 10 lines and is in the sky?
Star
156+44 and 156-44
200 and 112