Year 7 Substitution Worksheet — Level 2 — Practice Set 3 — 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 3 — Answers
Replace the letter with the number, then calculate. Use brackets for negative values.
1.Find the value of 8x − 5 when x = 3
Answer: 19
- 8 × 3 − 5
- = 24 − 5 = 19
2.Find the value of 8x + 6 when x = −2
Answer: −10
- 8 × (−2) + 6
- = −16 + 6 = −10
3.Find the value of −5x + 3 when x = −5
Answer: 28
- −5 × (−5) + 3
- = 25 + 3 = 28
4.Find the value of 2x + 2 when x = 2
Answer: 6
- 2 × 2 + 2
- = 4 + 2 = 6
5.Find the value of 7x − 3 when x = 5
Answer: 32
- 7 × 5 − 3
- = 35 − 3 = 32
6.Find the value of −2x + 3 when x = −1
Answer: 5
- −2 × (−1) + 3
- = 2 + 3 = 5
7.Find the value of 5x when x = 4
Answer: 20
- 5 × 4 + 0
- = 20 + 0 = 20
8.Find the value of x + 5 when x = 2
Answer: 7
- 1 × 2 + 5
- = 2 + 5 = 7
9.Find the value of 5x + 2 when x = −4
Answer: −18
- 5 × (−4) + 2
- = −20 + 2 = −18
10.Find the value of 5x + 5 when x = −3
Answer: −10
- 5 × (−3) + 5
- = −15 + 5 = −10
11.Find the value of 4x + 4 when x = 7
Answer: 32
- 4 × 7 + 4
- = 28 + 4 = 32
12.Find the value of −x + 5 when x = 1
Answer: 4
- −1 × 1 + 5
- = −1 + 5 = 4
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