乘除法中的未知数
Unknown in Multiplication & Division
确定乘法或除法算式中与三个整数相关的未知整数(例如 8 × ? = 48,? × 6 = 42)
Determine the unknown whole number in a multiplication or division equation relating three whole numbers (e.g. 8 × ? = 48, ? × 6 = 42)
学习证据 / Evidence
- 在 7 × ? = 63 中找出缺失的因数
- 在 ? ÷ 5 = 9 中找出缺失的被除数
- 说明所用策略(例如利用相关的乘法口诀)
- Find the missing factor in 7 × ? = 63
- Find the missing dividend in ? ÷ 5 = 9
- Explain the strategy used (e.g. using the related multiplication fact)
评估问题 / Assessment
如果{{name}}在纸上看到“8 × ? = 48”或“? ÷ 6 = 7”,能判断出空格里应填什么数字吗?
If {{name}} sees '8 × ? = 48' or '? ÷ 6 = 7' written on paper, can they figure out what number goes in the blank?