Open Sentences - JSS1 Mathematics Past Questions and Answers - page 1
1
Which of the following is an example of using a letter to represent a number?
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A
2+3=5
B
𝑥+2=7
C
10−4=6
D
8×3=24
2
Which of the following is a closed sentence?
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A
𝑦+4=9
B
3+5=8
C
𝑥−2=5
D
2𝑦= 10
3
What is the solution to the open sentence 𝑥+6=11?
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A
4
B
5
C
6
D
7
4
Which of the following is an open sentence?
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A
4+5=9
B
𝑥×3=15
C
6÷2=3
D
7−3=4
5
Given the open sentence 2𝑦−3=5, which value of 𝑦 makes the sentence true?
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A
3
B
4
C
6
D
5
6
What is the value of 𝑥 in the open sentence 𝑥−4= 10?
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A
14
B
6
C
10
D
16
7
Identify the open sentence:
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A
12×2=24
B
15+𝑥=20
C
8−3=5
D
10÷5=2
8
What number from the set {1, 2, 3, 4} satisfies the open sentence 3𝑥=9?
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A
1
B
2
C
3
D
4
9
Which of the following sentences is closed?
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A
𝑦×4= 16
B
7+2=9
C
𝑥−1= 5
D
5𝑦= 25
10
What is the value of 𝑦 in the open sentence 3𝑦+6=15?
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A
1
B
2
C
3
D
4
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