最も近い整数に丸める
このページは、ターゲットが整数にロックされている最近接整数インテント専用です。
四捨五入計算機
数値を入力し、丸め設定を選択します
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🪄 簡単な例
📋 How It Works
仕組み
1
Step 1
Keep the ones place and inspect the tenths digit.
2
Step 2
Apply the selected tie and direction rule.
3
Step 3
Return an integer result.
📊 Examples
実用例
Whole-number examples focus on tenths-digit decisions and tie handling.
| 入力 | ターゲット | 方法 | 結果 |
|---|---|---|---|
| 12.49 | 最も近い整数 | 半分を切り上げる | 12 |
| 12.50 | 最も近い整数 | 半分を切り上げる | 13 |
| -2.51 | 最も近い整数 | 半分を切り上げる | -3 |
ヒント
よくある間違い
Avoid these frequent rounding errors when validating outputs.
- Looking at hundredths instead of tenths.
- Treating all 0.5 values as Half Up results.
- Using nearest whole number when decimal precision is required.
- Ignoring method differences for negatives.
❓ よくある質問
よくある質問
Which digit controls nearest whole-number rounding?
The tenths digit decides whether the ones place stays or changes.
Does 0.5 always round up?
It rounds up in Half Up, but other methods may handle ties differently.
Can I change the method on this page?
Yes. Method is editable while the target stays fixed to whole number.
Where do I round to decimal places?
Use the decimal-places hub or dedicated tenth and hundredth pages.