MathIQO worksheet
Evaluate algebraic expressions by substituting values for a variable · Grade 6 · C2.3
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- 1
Evaluate 4 × n + 8 when n = 4.
Warm-upAnswer:
- 2
Evaluate 2 × n + 3 when n = 6.
Warm-upAnswer:
- 3
Evaluate 5 × n + 9 when n = 7.
Warm-upAnswer:
- 4
Evaluate 8 × n − 69 when n = 9.
On levelAnswer:
- 5
Evaluate 3 × n − 21 when n = 10.
On levelAnswer:
- 6
Evaluate 5 × n − 24 when n = 12.
On levelAnswer:
- 7
Evaluate 4 × a + 5 × b when a = 8 and b = 4.
ChallengeAnswer:
- 8
Evaluate 6 × a + 6 × b when a = 7 and b = 5.
ChallengeAnswer:
- 9
Evaluate 2 × a + 2 × b when a = 3 and b = 2.
ChallengeAnswer:
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Worksheet code: eyJzIjoiYWxnZWJyYS1leHByZXNzaW9ucy1ldmFsdWF0ZSIsImQiOlsxMTkxNjEyNDI2LDE3MDYyMjMwNzcsMTQyMDgyMTczOSwxMzE4MjQzNTgyLDE5MDMxOTM1NTcsMTEzMjE5OTkyOCwyMDg0MDAwNjY3LDY1MDQ3NTMxNCw0MjE2MjA4NzFdLCJ2IjoxfQ.e0b04cdace69
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Answer key · Evaluate algebraic expressions by substituting values for a variable
- 1.24 — 4 × 4 = 16, then + 8 = 24.
- 2.15 — 2 × 6 = 12, then + 3 = 15.
- 3.44 — 5 × 7 = 35, then + 9 = 44.
- 4.3 — 8 × 9 = 72, then − 69 = 3.
- 5.9 — 3 × 10 = 30, then − 21 = 9.
- 6.36 — 5 × 12 = 60, then − 24 = 36.
- 7.52 — 4 × 8 = 32 and 5 × 4 = 20, so the sum is 52.
- 8.72 — 6 × 7 = 42 and 6 × 5 = 30, so the sum is 72.
- 9.10 — 2 × 3 = 6 and 2 × 2 = 4, so the sum is 10.