Mixed operations: adding and subtracting facts and signs online games for kids in first grade, second grade, third grade. This quiz introduces students’ to pre-algebra equations. It is an online multiple choice question quiz. In this quiz, students are required to find the missing sign (+, -) in a complete equation. While strengthening the kids’ addition and subtraction skills, it also emphasizes the importance of the signs. It forms a basis for pre-algebra equations in higher classes. The quiz is interactive and kids can be supervised by tutors, school seniors or parents. With a computer or mobile phone, this mixed operation quiz can be taken at home or in school. It also provides an opportunity for kids to practice many times.

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