1. Write the correct symbols (+,-,x, ) to make
the number sentence correct. (use brackets
where needed)
5 5 5 = 15
5 5 5 = 50
5 5 5 = 125
5 5 5 = 6
5 5 5 = 50
5 5 5 = 5
5 5 5 = 30
5 5 5 = 4
5 5 5 = 0

3. Solve the following operations
1. 8 +13 +17 x 5
2. 14 - 9 + 3 + 3
3. 5 x 6 + 2 - 1
4. 15 x 17 +17 +16 7. (8 + 4) + 14 x 7
5. (12 - 7) x 10 + 6 8. (14 +48 - 2) x 12
9. (11 + 3) x (11 + 3)
6. 7 x 6 +(2 - 9)
10.( 8 + 2)2 + (24 - 6)
11.(55 - 5) - 5 - 72

4. What about algebra?
What are our strategies for finding a variable?

5. Find the variable
12.10m + 9 = 89
13.6b - 2 = 46
14.3n + 5 = 23 16. 3(3z + 9) + 6 = 51
15.11y - 5 = 50 17. 5(10x + 5) + 11 = 336
18. 7(8m - 11) - 9 = 530
19. 5(10c - 10) + 10 = 510
20. 5(8d + 11) - 8 = 327

6. HARD ONES!
A. 7a - 5 = 3a + 15
B. 2w - 6 = 10w – 46
C. 7m - 10 = 3m + 14
D. 8w + 10 = 5w + 25

7. HARDER ONES
A. 4(2a + 3) - 7 = 4a + 17
B. 7(3a + 3) + 7 = 8a + 119