带分数与假分数

能够使用正式书面计算方法，对正负整数、小数、真分数、假分数和带分数进行四则运算。

Use the four operations with formal written methods applied to integers, decimals, proper and improper fractions, and mixed numbers, all both positive and negative

学习证据 / Evidence

• 能对正负整数进行加、减、乘、除运算
• 能运用正式书面计算方法对任意大小的小数进行计算
• 能对真分数、假分数和带分数进行四则运算

• Add, subtract, multiply, and divide with positive and negative integers
• Apply formal written methods to calculations with decimals of any size
• Perform all four operations with proper fractions, improper fractions, and mixed numbers

评估问题 / Assessment

如果{{name}}在解决一道较长的题目时需要计算 −1/2 + 3/4 − 1又1/4，ta 能否用书面计算方法完成，并清楚地写出每一步？

If {{name}} needs to work out −1/2 + 3/4 − 1 and 1/4 as part of a longer problem, can they do it using written methods — showing each step clearly?