プライム&コンポジット ワークシート

4年生 — 6年生に推奨

新しいワークシート

プライム&コンポジット ワークシート

名前: ____________________日付: ____________

説明書: 素数と合成数を識別し、素因数分解を書きます。

20 問題

  1. Prime numbers in {21, 11, 23, 7, 15, 12} → ______
  2. Prime numbers in {19, 5, 2, 11, 23, 27} → ______
  3. Prime numbers in {3, 11, 21, 2, 5, 12} → ______
  4. Prime numbers in {23, 8, 29, 2, 25, 3} → ______
  5. Prime numbers in {15, 8, 2, 27, 11, 21} → ______
  6. Prime numbers in {19, 8, 27, 15, 9, 21} → ______
  7. Prime numbers in {9, 13, 11, 2, 21, 3} → ______
  8. Prime numbers in {25, 2, 8, 17, 11, 13} → ______
  9. Prime numbers in {11, 25, 9, 17, 3, 27} → ______
  10. Prime numbers in {25, 8, 3, 11, 27, 2} → ______
  11. Prime numbers in {5, 9, 2, 27, 19, 17} → ______
  12. Prime numbers in {21, 3, 7, 17, 2, 12} → ______
  13. Prime numbers in {12, 19, 2, 11, 13, 9} → ______
  14. Prime numbers in {7, 17, 23, 27, 9, 25} → ______
  15. Prime numbers in {23, 25, 21, 13, 11, 8} → ______
  16. Prime numbers in {12, 15, 5, 23, 29, 19} → ______
  17. Prime numbers in {13, 12, 23, 21, 8, 5} → ______
  18. Prime numbers in {13, 12, 27, 17, 11, 25} → ______
  19. Prime numbers in {12, 2, 29, 7, 8, 5} → ______
  20. Prime numbers in {17, 27, 13, 29, 7, 25} → ______