Math Problem Statement
请帮我解答以下问题:小明有5个苹果,小红有7个苹果,小明给了小红2个苹果后,他们两人各有多少个苹果?
Solution
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Math Problem Analysis
Mathematical Concepts
Basic Arithmetic
Addition
Subtraction
Formulas
Subtraction: a - b
Addition: a + b
Theorems
-
Suitable Grade Level
Grades 1-3