Grade 9 Mathematics Quiz on Number Systems
Authored by fikadu taye
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the set of natural numbers denoted by?
ℕ
ℝ
ℚ
ℤ
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a prime number?
4
6
8
7
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the GCF of 30 and 45?
15
20
5
10
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following numbers is composite?
5
9
3
2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the least common multiple (LCM) of 10 and 15?
45
60
15
30
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a characteristic of prime numbers?
They are always even.
They can be negative.
They are only divisible by 1 and themselves.
They have more than two factors.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the prime factorization of 48?
2 × 2 × 2 × 2 × 3
2 × 3 × 4
3 × 3 × 2 × 2
2 × 2 × 2 × 3
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