位值×10规律
Place Value × 10 Pattern
认识多位数中，一个数字在某一位上的值是它右边一位上的值的10倍（例如 700 ÷ 70 = 10）。
Recognise that in a multi-digit whole number, a digit in one place represents ten times what it represents in the place to its right (e.g. 700 ÷ 70 = 10)
学习证据 / Evidence
- 解释3000中的3是300中的3的10倍
- 完成：700 ÷ 70 = __，并用位值推理说明理由
- 说出50000中的5的值是5000中的5的值的多少倍
- Explain that the 3 in 3,000 is ten times the 3 in 300
- Complete: 700 ÷ 70 = __ and explain using place-value reasoning
- State how many times greater the value of the 5 in 50,000 is than the 5 in 5,000
评估问题 / Assessment
{{name}}能解释为什么在700中，7的值是在70中的10倍——因为每向左移动一位，数值就乘以10吗？
Can {{name}} explain that in 700, the 7 is worth 10 times more than in 70 — because moving one place to the left multiplies the value by 10?