Year 7 Substitution Worksheet — Level 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 — Answers
Replace the letter with the number, then calculate. Use brackets for negative values.
1.Find the value of 8x + 5 when x = −1
Answer: −3
- 8 × (−1) + 5
- = −8 + 5 = −3
2.Find the value of −5x + 6 when x = 9
Answer: −39
- −5 × 9 + 6
- = −45 + 6 = −39
3.Find the value of −5x + 7 when x = −5
Answer: 32
- −5 × (−5) + 7
- = 25 + 7 = 32
4.Find the value of −3x + 7 when x = 3
Answer: −2
- −3 × 3 + 7
- = −9 + 7 = −2
5.Find the value of 8x − 3 when x = 5
Answer: 37
- 8 × 5 − 3
- = 40 − 3 = 37
6.Find the value of 5x − 3 when x = −4
Answer: −23
- 5 × (−4) − 3
- = −20 − 3 = −23
7.Find the value of −4x − 2 when x = −5
Answer: 18
- −4 × (−5) − 2
- = 20 − 2 = 18
8.Find the value of 7x − 6 when x = 9
Answer: 57
- 7 × 9 − 6
- = 63 − 6 = 57
9.Find the value of 8x − 9 when x = −1
Answer: −17
- 8 × (−1) − 9
- = −8 − 9 = −17
10.Find the value of 2x + 5 when x = −6
Answer: −7
- 2 × (−6) + 5
- = −12 + 5 = −7
11.Find the value of 2x + 8 when x = −1
Answer: 6
- 2 × (−1) + 8
- = −2 + 8 = 6
12.Find the value of 2x + 8 when x = −6
Answer: −4
- 2 × (−6) + 8
- = −12 + 8 = −4
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