# Substitution Worksheet

Use Substitution and the Order of Operations to simplify each problem. Let a = 5, b = -2, x = p + 1, and y = q2.

Click “Show Answer” underneath the problem to see the answer. Or click the “Show Answers” button at the bottom of the page to see all the answers at once.

## Example:

`Equation: b + x2 `
`Answer: p^2 - 2p - 1`

## Quiz:

1. `Equation: 5a + 3 `
`Answer: 28`

2. `Equation: 2a / b `
`Answer: -5`

3. `Equation: b2 + a2 `
`Answer: 29`

4. `Equation: b3 `
`Answer: -8`

5. `Equation: 10b2 `
`Answer: 40`

6. `Equation: 5x `
`Answer: 5p + 5`

7. `Equation: -ax `
`Answer: -5p - 5`

8. `Equation: x2 `
`Answer: p^2 + 2p + 1`

9. `Equation: ab2 `
`Answer: 20`

10. `Equation: a3x `
`Answer: 125p + 125`

11. `Equation: xy `
`Answer: pq^2 + q^2`

12. `Equation: a + xy / q + a - 5 `
`Answer: 5 + pq + q`

13. `Equation: a(b + 1) - a + ab `
`Answer: -20`

14. `Equation: (a + b)2 `
`Answer: 9`

15. `Equation: a(a + x) `
`Answer: 30 + 5p`

16. `Equation: y2 - q4 `
`Answer: 0`

17. `Equation: abx2 `
`Answer: -10p^2 - 20p - 10`

18. `Equation: 2x2 - 2(p2 + 1) `
`Answer: 4p`

19. `Equation: a + b - 5 `
`Answer: -2`

20. `Equation: mx - p(m - 1) `
`Answer: m + p`

## Related Pages

Substitution Introduction Lesson

Introduction to substituting variables in an expression with numbers or other expressions.

## Tutoring

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