Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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If a number can only be divided by 1 and itself, it is known as:
a. | prime number | c. | multiple number | b. | composite number | d. | factor number |
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2.
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If a number has only the factors of 1 and 19, we can say it is what kind of
number?
a. | multiple number | c. | prime number | b. | composite number | d. | factor number |
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3.
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Why is 23 a prime number?
a. | It is a double-digit number | c. | It ends in
three | b. | It can only be divided itself and 1 | d. | It has more than two
factors |
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4.
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7 is a prime number. Why isn’t 27 a prime number?
a. | It is a double-digit number | c. | It ends in 7 | b. | It is
prime | d. | It has factors of 3
and 9 as well |
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5.
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A number has the factors of 1, 3 ,4, 24 and 6. Why isn’t it a prime
number?
a. | It is a double-digit number | c. | It has more than two
factors. | b. | It has an odd number of factors | d. | One of its factors is
3. |
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6.
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Which of these numbers is prime?
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7.
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Which of these numbers is NOT prime?
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8.
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Why is 9 a composite number?
a. | It has more than 2 factors | c. | 3 is one of its
factors | b. | It is a one digit number | d. | Because it is a prime number |
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9.
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Which one of these numbers is a composite number?
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10.
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Which one of these numbers is NOT a composite number?
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11.
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If a number includes the factors of 3 and 7, is it composite? Why?
a. | Yes because the total of 3 and 7 is 10, an even number | c. | No because 3 and 7 are odd
numbers | b. | No because composite numbers refer to double-digit prime numbers. | d. | Yes because 3 and 7 factor into many numbers
such as 21 and 28. |
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12.
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What do we call a number that can be multiplied by itself and another number to
get a third number?
a. | composite | c. | fraction | b. | factor | d. | symmetrical |
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13.
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12 ÷ 3 = 4, 3 x 4 = 12, 12 x
1 = 12, 2 x 6 = 12, 12 ÷ 6 = 2. What do we call the numbers 3, 4,
2, 6, and 1 in these equations?
a. | composite | c. | factor | b. | fraction | d. | metric |
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14.
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15 ÷ 3 = 5 3 x 5 = 15. Which number in these
equations is a factor?
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15.
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6, 9, 12, 15. These numbers are multiples of which number below?.
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16.
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Which list below are multiples of 7?
a. | 7, 14, 21, 28, 35, 42 | c. | 7, 8, 9, 10, 11, 12 | b. | 7, 15 22, 29, 36, 43 | d. | 7, 0, 14, 0 21, 0,
28 |
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17.
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Which number below is a multiples of 81?
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