100以内的罗马数字
Roman numerals to 100
阅读100以内的罗马数字(I 到 C),并理解这种数字系统随时间发生了变化,后来加入了零和位值制。
Read Roman numerals to 100 (I to C) and understand that the numeral system changed over time to include zero and place value
学习证据 / Evidence
- 能读、写罗马数字 I、V、X、L、C,以及它们不超过100的组合。
- 能在罗马数字和印度-阿拉伯数字之间进行转换(例如 XLIV = 44)。
- 能说明罗马数字没有零,也没有位值制。
- Read and write Roman numerals I, V, X, L, C and combinations up to 100
- Convert between Roman numerals and Hindu-Arabic numerals (e.g. XLIV = 44)
- Explain that Roman numerals have no zero and no place-value system
评估问题 / Assessment
{{name}}能读出像 XIV(14)或 XLII(42)这样的罗马数字吗?是否知道为什么在零和位值制被发明后,大多数情况下我们不再使用罗马数字了?
Can {{name}} read Roman numerals like XIV (14) or XLII (42) — and do they know why we stopped using Roman numerals for most things once zero and place value were invented?