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(3個) (3個) (3個) (3個) → 3を4回 = 12
🎯 3 × 4 = 3 + 3 + 3 + 3 = 12
🔵🔵🔵🔵🔵 🔵🔵🔵🔵🔵 🔵🔵🔵🔵🔵
(5個) (5個) (5個) → 5を3回 = 15
🎯 5 × 3 = 5 + 5 + 5 = 15
| × | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|
| 2 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 |
| 3 | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 24 | 27 |
| 4 | 4 | 8 | 12 | 16 | 20 | 24 | 28 | 32 | 36 |
| 5 | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 |
| 6 | 6 | 12 | 18 | 24 | 30 | 36 | 42 | 48 | 54 |
| 7 | 7 | 14 | 21 | 28 | 35 | 42 | 49 | 56 | 63 |
| 8 | 8 | 16 | 24 | 32 | 40 | 48 | 56 | 64 | 72 |
| 9 | 9 | 18 | 27 | 36 | 45 | 54 | 63 | 72 | 81 |
3 × 4 = 4 × 3 = 125 × 0 = 05 × 1 = 5| 問題 | 答え |
|---|---|
| 2 × 1 = | 2 |
| 2 × 2 = | 4 |
| 2 × 3 = | 6 |
| 2 × 4 = | 8 |
| 2 × 5 = | 10 |
| 2 × 6 = | 12 |
| 2 × 7 = | 14 |
| 2 × 8 = | 16 |
| 2 × 9 = | 18 |
💡 2の段は「2ずつ増える」パターン → 2, 4, 6, 8, 10…(すべて偶数)
| 問題 | 答え |
|---|---|
| 5 × 1 = | 5 |
| 5 × 2 = | 10 |
| 5 × 3 = | 15 |
| 5 × 4 = | 20 |
| 5 × 5 = | 25 |
| 5 × 6 = | 30 |
| 5 × 7 = | 35 |
| 5 × 8 = | 40 |
| 5 × 9 = | 45 |
💡 5の段は「5ずつ増える」パターン → 一の位は必ず 0か5