1. Algebra
Collecting Like Terms

2. What is the Perimeter?
5cm
6cm
15cm
14cm
8cm
20cm

3. What is the Perimeter?
10cm
20cm
12cm
30cm

4. What is the Perimeter? a + b + 2a + b + 3a + 2b =
a + 2a + 3a + b + b + 2b =
6a + 4b
a cm
b cm
2a cm
2b cm
b cm
3a cm

5. What is the Perimeter? A B A A 2A A

6. Pyramids 4 11 7

7. Pyramids -5 4 -3

8. Pyramids 2x x 3x

9. Pyramids -x 3x 2x

10. Pyramids
-2y
-6y 4y

11. Pyramids
10x 4x

12. Pyramids
a + 2b
3a + b
2a + b

13. Pyramids
10a + 4b
6a + 2b
a + b

14. Pyramids
2a - 2b
a + b
a - b

15. Pyramids
x + 2y
x – 2y
2x - y