加减法应用题

解决100厘米以内的长度应用题，能运用加法和减法，并通过画图和列算式来解答。

Solve word problems involving lengths within 100, using addition and subtraction with drawings and equations

学习证据 / Evidence

• 解答“一根绳子长45厘米，剪掉18厘米，现在还剩多长？”
• 画一个示意图（如尺子图）来表示一个长度应用题。
• 写出带有未知数符号的等式来表示这个问题。

• Solve 'The rope is 45 cm long. I cut off 18 cm. How long is it now?'
• Draw a diagram (e.g. a ruler drawing) to represent a length word problem
• Write an equation with a symbol for the unknown to represent the problem

评估问题 / Assessment

如果{{name}}有一根75厘米长的绳子，剪掉28厘米，他们能算出还剩多少厘米吗？并画一个数轴图来展示吗？

If {{name}} has a piece of rope 75 cm long and cuts off 28 cm, can they work out how much rope is left — and draw a number-line diagram to show it?