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Evaluate algebraic expressions by substituting values for a variable · Grade 6 · C2.3

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Date: ______________________

1
Evaluate 2 × n + 8 when n = 8.
Warm-up
Answer:
2
Evaluate 3 × n + 7 when n = 2.
Warm-up
Answer:
3
Evaluate 4 × n + 5 when n = 6.
Warm-up
Answer:
4
Evaluate 6 × n − 16 when n = 5.
On level
Answer:
5
Evaluate 4 × n − 11 when n = 12.
On level
Answer:
6
Evaluate 3 × n − 10 when n = 4.
On level
Answer:
7
Evaluate 5 × a + 3 × b when a = 6 and b = 7.
Challenge
Answer:
8
Evaluate 6 × a + 2 × b when a = 8 and b = 9.
Challenge
Answer:
9
Evaluate 5 × a + 6 × b when a = 9 and b = 5.
Challenge
Answer:

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Worksheet code: eyJzIjoiYWxnZWJyYS1leHByZXNzaW9ucy1ldmFsdWF0ZSIsImQiOlsxMzQ1Nzk1MzE4LDQ1MzAxNDgzMyw5ODAxMjY0MzQsOTQ5MzYyOTk1LDExNDk2ODA3Miw3NzUyMTQzNjgsMzM5OTYyMjMzLDIwNzk4OTcyMTgsMTQ1MDg0NjU3OF0sInYiOjF9.387be4b15579

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Answer key · Evaluate algebraic expressions by substituting values for a variable

1.
24 — 2 × 8 = 16, then + 8 = 24.
2.
13 — 3 × 2 = 6, then + 7 = 13.
3.
29 — 4 × 6 = 24, then + 5 = 29.
4.
14 — 6 × 5 = 30, then − 16 = 14.
5.
37 — 4 × 12 = 48, then − 11 = 37.
6.
2 — 3 × 4 = 12, then − 10 = 2.
7.
51 — 5 × 6 = 30 and 3 × 7 = 21, so the sum is 51.
8.
66 — 6 × 8 = 48 and 2 × 9 = 18, so the sum is 66.
9.
75 — 5 × 9 = 45 and 6 × 5 = 30, so the sum is 75.