Klataza 🧮 Math
Unit 18 · Review: mixed problems
🟰 Equations
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Problems
- 25% of 40 =
- −2 − (−4) =
- 8² =
- 6(x − 5) = 6 x =
- 75% of 20 =
- −9 + 6 =
- 2^2 =
- x + 12 = 21 x =
- 75% of 100 =
- −6 − 6 =
- 25% of 120 =
- 0 + 6 =
- Simplify: x^2 · x^3 =
- 6(x − 11) = -36 x =
- 25% of 400 =
- 7 + 3 =
- 3² =
- x + 9 = 19 x =
- −9 − (−3) =
- 20% of 40 =
Tip: 10% is one tenth, 50% is half, 25% is a quarter.
Answer key
1. 10 · 2. 2 · 3. 64 · 4. x = 6 · 5. 15 · 6. -3 · 7. 4 · 8. x = 9 · 9. 75 · 10. -12 · 11. 30 · 12. 6 · 13. x^5 · 14. x = 5 · 15. 100 · 16. 10 · 17. 9 · 18. x = 10 · 19. -6 · 20. 8