十分之一(9岁以上)
Tenths (age 9+)
认识并使用千分之一,并理解千分之一与十分之一、百分之一以及它们的小数表示之间的关系(例如 1/1000 = 0.001,35/1000 = 0.035)。
Recognise and use thousandths; relate them to tenths, hundredths, and their decimal equivalents (e.g. 1/1000 = 0.001, 35/1000 = 0.035)
学习证据 / Evidence
- 能将0.025写作25/1000
- 能解释1个十分之一等于100个千分之一
- 能在0.34和0.35之间的数轴上标出0.345
- Write 0.025 as 25/1000
- Explain that 1 tenth = 100 thousandths
- Place 0.345 on a number line between 0.34 and 0.35
评估问题 / Assessment
如果{{name}}看到小数0.003,能把它写成一个分数,并大致说出它在0到0.01之间的数轴上处于哪个位置吗?
If {{name}} sees the decimal 0.003, can they write it as a fraction and tell you roughly where it sits on a number line between 0 and 0.01?