4 + 5 = ?
9
10 - 2 = ?
8
1, 2, ___, ___, 5, ___, ____
3, 4, 6, 7
3, 5, 8
3+5=8
5+3=8
8-3=5
8-5=3
I have 4 equal sides and 4 vertices!
A square!
7 + 7 = ?
14
15 - 5 = ?
10
10, ___, 14, 16, ___, ___, 22, ___
12, 18, 20, 24
10, 8, 2
2+8=10
8+2=10
10-2=8
10-8=2
I have 3 sides and 3 vertices!
A triangle!
8 + 9 = ?
17
20 - 11 = ?
9
25, ___, 35, 40, ___, ___, 55, ___
30, 45, 50, 60
3, 9, 12
3+9=12
9+3=12
12-3=9
12-9=3
I have 4 sides and 4 vertices! Two of my sides are LONGER and two of my sides are shorter!
A rectangle!
10 + 11 = ?
21
30 - 8 = ?
22
88, 78, ___, ___, 48, ___, 28, ___
68, 58, 38, 18
20, 14, 6
14+6=20
6+14=20
20-14=6
20-6=14
I have 6 sides and 6 vertices!
A hexagon!
50 + 50 = ?
100
50 - 30 = ?
20
74,___,54, ___, 34, 24, ___, ___
64, 44, 14, 4
20, 10, 30
10+20=30
20+10=30
30-20-10
30-10=20
I have 12 sides and 12 vertices!