Question Paper
Class / Subject: Class 6 (ICSE) · Mathematics
Chapter: Chapter 20 — Chapter 20: Substitution
Time Allowed: 32 minutes
Max Marks: 16
1. What does substitution mean in algebra? [1]
(A) Replacing a variable with a number
(B) Adding two variables
(C) Ignoring variables
(D) Multiplying variables together
2. If x=4, what is 2x+3? [1]
(A) 11
(B) 9
(C) 8
(D) 14
3. If y=5, what is 3y-2? [1]
(A) 13
(B) 15
(C) 10
(D) 17
4. What do we do after substituting a value? [1]
(A) Calculate the expression
(B) Ignore the expression
(C) Delete the variable
(D) Nothing further
5. Why is substitution useful? [1]
(A) To check if values satisfy equations
(B) No reason
(C) It's not useful
(D) Only for tests
6. If a=2, what is 5a? [1]
(A) 10
(B) 7
(C) 2
(D) 52
7. If b=3, what is b+7? [1]
(A) 10
(B) 21
(C) 4
(D) 73
8. What skill does substitution build? [1]
(A) Understanding algebra-number relationships
(B) No useful skill
(C) Only memorisation
(D) Only drawing
9. What does substitution mean in algebra? [1]
(A) Replacing a variable with a number
(B) Adding two variables
(C) Ignoring variables
(D) Multiplying variables together
10. If x=4, what is 2x+3? [1]
(A) 11
(B) 9
(C) 8
(D) 14
11. If y=5, what is 3y-2? [1]
(A) 13
(B) 15
(C) 10
(D) 17
12. What do we do after substituting a value? [1]
(A) Calculate the expression
(B) Ignore the expression
(C) Delete the variable
(D) Nothing further
13. Why is substitution useful? [1]
(A) To check if values satisfy equations
(B) No reason
(C) It's not useful
(D) Only for tests
14. If a=2, what is 5a? [1]
(A) 10
(B) 7
(C) 2
(D) 52
15. If b=3, what is b+7? [1]
(A) 10
(B) 21
(C) 4
(D) 73
16. What skill does substitution build? [1]
(A) Understanding algebra-number relationships
(B) No useful skill
(C) Only memorisation
(D) Only drawing