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# Qwizdom year 7 maths - find the missing number

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An interactive maths lesson designed for use with Qwizdom Interactive Voting Systems

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### Qwizdom year 7 maths - find the missing number

1. 1. Year 7 Maths: Find the Missing Number An Interactive Qwizdom Lesson
2. 2. 6a = 30 So a = ?
3. 3. 4b = 28 So b = ?
4. 4. c + 9 = 17 So c = ?
5. 5. d + 14 = 32 So d = ?
6. 6. e - 2 = 11 So e = ?
7. 7. f - 5 = 15 So f = ?
8. 8. 100 - g = 94 So g = ?
9. 9. 2a + 5 = 25 So 2a = ?
10. 10. 2a + 5 = 25 2a = 20 So a = ?
11. 11. 3c + 7 = 19 So 3c = ?
12. 12. 3c + 7 = 19 3c = 12 So c = ?
13. 13. 5d - 2 = 18 So 5d = ?
14. 14. 5d - 2 = 18 5d = 20 d = ?
15. 15. 6e - 10 = 2 6e = ?
16. 16. 6e - 10 = 2 6e = 12 So e = ?
17. 17. 2f + 10 = 2 So 2f = ?
18. 18. 2f + 10 = 2 2f = -8 So f = ?