Definition: the process of adding numbers or amounts together in order to get a total Level: B2
每周两次，孩子们接受基本数学技能测试，如加法和减法。
Twice a week the children are tested in basic math skills such as ___addition and subtraction.
加法是算术中的基本运算。
___Addition is a fundamental operation in arithmetic.
要找到总数，你需要进行加法运算。
To find the total, you need to perform ___addition.
