Year 9 Substitution Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 9 algebraic expressions worksheet.
Success TutoringWorksheetsAnswer sheetYear 9 · Mathematics · Algebraic ExpressionsYear 9 Substitution Worksheet — Level 2 — Answers
Replace the letter with the number, then calculate. Use brackets for negative values.
1.Find the value of x + 9 when x = 4
Answer: 13
- 1 × 4 + 9
- = 4 + 9 = 13
2.Find the value of 8x − 3 when x = −4
Answer: −35
- 8 × (−4) − 3
- = −32 − 3 = −35
3.Find the value of −x − 2 when x = −5
Answer: 3
- −1 × (−5) − 2
- = 5 − 2 = 3
4.Find the value of −5x − 5 when x = 4
Answer: −25
- −5 × 4 − 5
- = −20 − 5 = −25
5.Find the value of 8x + 4 when x = 6
Answer: 52
- 8 × 6 + 4
- = 48 + 4 = 52
6.Find the value of 3x − 9 when x = 6
Answer: 9
- 3 × 6 − 9
- = 18 − 9 = 9
7.Find the value of 8x − 7 when x = 6
Answer: 41
- 8 × 6 − 7
- = 48 − 7 = 41
8.Find the value of 5x − 5 when x = −2
Answer: −15
- 5 × (−2) − 5
- = −10 − 5 = −15
9.Find the value of 7x + 9 when x = 3
Answer: 30
- 7 × 3 + 9
- = 21 + 9 = 30
10.Find the value of 4x − 6 when x = 6
Answer: 18
- 4 × 6 − 6
- = 24 − 6 = 18
11.Find the value of x + 7 when x = 1
Answer: 8
- 1 × 1 + 7
- = 1 + 7 = 8
12.Find the value of 8x − 6 when x = 8
Answer: 58
- 8 × 8 − 6
- = 64 − 6 = 58
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