1 Years 7-9 (KS3) Mathematics resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter Years 7-9 (KS3) SubjectClear filter Mathematics Exam board All boards TopicClear filter Adding and Subtracting Negative and Positive Numbers Number Line Addition and Subtraction Resources Video Adding and Subtracting Negative and Positive Numbers Years 7-9 (KS3), Mathematics Video Search again