Topic 7 Review
Flashcard
•
Mathematics
•
4th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the divisibility rule for 3?
Back
If the number's digits add up to a multiple of 3, then 3 is a factor. Example: 75 --- 7+5 is 12, 12 is a multiple of 3, so 3 is a factor of 75.
2.
FLASHCARD QUESTION
Front
What is a prime number?
Back
A prime number is a number that has exactly two factors: 1 and itself. Example: 3 is prime because its only factors are 1 and 3.
3.
FLASHCARD QUESTION
Front
What is a composite number?
Back
A composite number is a number that has more than two factors. Example: 4 is composite because its factors are 1, 2, and 4.
4.
FLASHCARD QUESTION
Front
What is the greatest common factor (GCF)?
Back
The GCF of two or more numbers is the largest number that divides all of them without leaving a remainder. Example: The GCF of 24 and 36 is 12.
5.
FLASHCARD QUESTION
Front
What is the divisibility rule for 10?
Back
If the number ends in 0, then it has 10 as a factor.
6.
FLASHCARD QUESTION
Front
What is the definition of a factor?
Back
A factor is a number that divides another number without leaving a remainder. Example: 2 is a factor of 8.
7.
FLASHCARD QUESTION
Front
What is the definition of a multiple?
Back
A multiple is the result of multiplying a number by an integer. Example: 12 is a multiple of 3 (3 x 4 = 12).
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