📖分数化小数训练秘籍 #
🎮玩法说明 #
游戏目标： 熟练掌握常考的分数对应小数的数值，精准快速得出结果。
操作流程： 屏幕显示题目如 “1/2=_”，填写小数，通过键盘输入答案。
分数与百分数对应表 #
| 分数（最简形式） |
小数（精确/近似值） |
| 1/2 |
=0.5 |
| 1/3 |
≈0.333 |
| 2/3 |
≈0.667 |
| 1/4 |
=0.25 |
| 3/4 |
=0.75 |
| 1/5 |
=0.2 |
| 2/5 |
=0.4 |
| 3/5 |
=0.6 |
| 4/5 |
=0.8 |
| 1/6 |
≈0.167 |
| 5/6 |
≈0.833 |
| 1/8 |
=0.125 |
| 3/8 |
=0.375 |
| 5/8 |
=0.625 |
| 7/8 |
=0.875 |
| 1/9 |
≈0.111 |
| 2/9 |
≈0.222 |
| 1/10 |
=0.1 |
| 3/10 |
=0.3 |
| 7/10 |
=0.7 |
| 9/10 |
=0.9 |
| 1/20 |
=0.05 |
| 3/20 |
=0.15 |
| 7/20 |
=0.35 |
| 9/20 |
=0.45 |
| 11/20 |
=0.55 |
| 13/20 |
=0.65 |
| 17/20 |
=0.85 |
| 19/20 |
=0.95 |
| 1/7 |
≈0.143 |
| 2/7 |
≈0.286 |
| 3/7 |
≈0.429 |
| 4/7 |
≈0.571 |
| 5/7 |
≈0.714 |
| 6/7 |
≈0.857 |
🌟练习意义 #
熟练掌握分数与小数的转化逻辑，提升小数运算、应用题列式的速度与准确性。
为小数除法、比例计算等知识点夯实基础，适配购物计价、长度换算等实际生活场景。
