Year 7 Substitution Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 7 algebraic expressions worksheet.
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · Algebraic ExpressionsYear 7 Substitution Worksheet — Level 2 — Practice Set 2 — Answers
Replace the letter with the number, then calculate. Use brackets for negative values.
1.Find the value of −4x + 2 when x = 1
Answer: −2
- −4 × 1 + 2
- = −4 + 2 = −2
2.Find the value of −2x − 5 when x = 2
Answer: −9
- −2 × 2 − 5
- = −4 − 5 = −9
3.Find the value of 3x − 2 when x = −3
Answer: −11
- 3 × (−3) − 2
- = −9 − 2 = −11
4.Find the value of 9x + 5 when x = −4
Answer: −31
- 9 × (−4) + 5
- = −36 + 5 = −31
5.Find the value of −5x + 4 when x = −3
Answer: 19
- −5 × (−3) + 4
- = 15 + 4 = 19
6.Find the value of 5x − 5 when x = 1
Answer: 0
- 5 × 1 − 5
- = 5 − 5 = 0
7.Find the value of 3x − 6 when x = 3
Answer: 3
- 3 × 3 − 6
- = 9 − 6 = 3
8.Find the value of 8x − 4 when x = 5
Answer: 36
- 8 × 5 − 4
- = 40 − 4 = 36
9.Find the value of x + 8 when x = 7
Answer: 15
- 1 × 7 + 8
- = 7 + 8 = 15
10.Find the value of −4x + 4 when x = 5
Answer: −16
- −4 × 5 + 4
- = −20 + 4 = −16
11.Find the value of 4x − 4 when x = −2
Answer: −12
- 4 × (−2) − 4
- = −8 − 4 = −12
12.Find the value of −5x when x = 6
Answer: −30
- −5 × 6 + 0
- = −30 + 0 = −30
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