››Factors, Multiples and Primes
Grade 5 · Math
Factors, Multiples and Primes
3 activities · Sort it! · Fill in!
Prime and composite numbers, HCF, LCM, divisibility rules
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Tips & Praises: ____________________________Tr. Sign.: ____________________Date: _______ Month: _______ Year: _______
1
Sort these numbers — PRIME (exactly 2 factors) or COMPOSITE (more than 2 factors)?
2
Find the HCF or LCM as indicated. Do not use the question label as a hint — work it out.
The smallest number divisible by both 5 and 6 =
The smallest number divisible by both 12 and 15 =
The largest number that divides both 9 and 12 exactly =
The largest number that divides both 4 and 6 exactly =
The largest number that divides both 8 and 12 exactly =
3
Choose the complete list of factors for each number.
All factors of 16:
1, 2, 3, 6
1, 2, 4, 8, 16
1, 2, 3, 4, 6, 12
All factors of 9:
1, 5, 25
1, 3, 9
1, 2, 3, 6
All factors of 8:
1, 2, 4, 8
1, 2, 4, 8, 16
1, 2, 3, 4, 6, 12
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