乘法与除法（10岁及以上）
Multiplying and dividing (age 10+)
将数乘以或除以10、100和1000，得出最多有三位小数的答案，并理解数字在数位表中的位置会随之移动。
Multiply and divide numbers by 10, 100, and 1000 giving answers up to three decimal places, understanding that digits shift position in the place-value chart
学习证据 / Evidence
- 能够正确计算 3.456 × 100 = 345.6
- 能够正确计算 45.2 ÷ 1000 = 0.0452
- 能够解释为什么乘以10会让每一位数字向左移动一位
- Compute 3.456 × 100 = 345.6 correctly
- Compute 45.2 ÷ 1000 = 0.0452 correctly
- Explain why multiplying by 10 shifts each digit one place to the left
评估问题 / Assessment
{{name}}能算出“4.6 ÷ 1,000 = 0.0046”吗？并且知道每除以一次10，数字就向右移动一位，即使越过小数点也是如此？
Can {{name}} work out '4.6 ÷ 1,000 = 0.0046' — knowing that each division by 10 shifts digits one place to the right, even past the decimal point?