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CHAPTER AT A GLANCE
The Other Side of Zero
•Unit: Number System (Integers)
•Board weightage: Positive and negative numbers, integers on the number line, inverses, comparing integers, addition and subtraction of integers (lift, number line and token models) and word problems give regular 1-mark, 2-mark, 3-mark and 4-mark questions in school examinations (please check your school's latest sample paper)
•Key ideas from the textbook: Building of Fun and the lift, starting floor + movement = target floor, target − start = movement, inverse numbers, subtracting a negative is adding a positive, the number line, the mine and infinite lift, tokens and zero pairs
•Most scoring part: writing the expression in the form start + movement = target, and converting subtraction to addition of the inverse
•Time to revise: about 55 minutes
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