H.5

소수와 합성수

2분기 (12~2월)

100 이하의 수가 소수(prime)인지 합성수(composite)인지 구별하기

난이도

보통

난이도

문제 수

예제 포함답안지 포함

@page { size: letter; margin: 0; } @media print { .ws-page + .ws-page { break-before: page; } } Daniel Math Academy \cdot Grade 4 Math Prime or Composite Skill H.5 \cdot Factors, multiples & primes \cdot ★★☆ Medium \cdot Quarter 2 Name Date Score / 8 Scan for answers Write prime or composite. Example 13 \to prime 21 \to composite (3 \times 7) Think: A prime number has exactly two factors, 1 and itself. 21 also has 3 and 7, so it is composite. 1 Is 23 prime or composite? 2 Is 71 prime or composite? 3 Is 63 prime or composite? 4 Is 93 prime or composite? 5 Is 90 prime or composite? 6 Is 86 prime or composite? 7 Is 25 prime or composite? 8 Is 29 prime or composite? Daniel Math Academy \cdot danielmath.com Worksheet # 6d3trj9 \cdot Page 1 / 2 Daniel Math Academy \cdot Grade 4 Math Answer Key H.5 Prime or Composite \cdot ★★☆ Medium 1 prime 2 prime 3 composite 4 composite 5 composite 6 composite 7 composite 8 prime Daniel Math Academy \cdot danielmath.com Worksheet # 6d3trj9 \cdot Answer Key \cdot Page 2 / 2

H. 약수·배수와 소수스킬 6개