This Math quiz is called 'Numbers - Addition and Subtraction' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.
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When adding numbers using a written method, it is important to line up the place values. When subtracting numbers, place values must line up one on top of the other.
To get you familiar with the subject, try this Math quiz on Addition and Subtraction.