Unit 1: Rational Numbers – Number Sense Video 1: Number Sense 1.1 - Adding and subtracting integers Video 2: Number sense 1.2 - Adding and subtracting integers practice problems Video 3: Number Sense 1.3 - Integers with Brackets Video 4: Number Sense 1.4 - Multiplying integers Video 5: Number Sense 1.5 - Fractions Basics 1.1 Video 6: Number Sense 1.6 - Mixed Numbers and Improper Fractions 1.2 Video 7: Number Sense 1.7 - Adding Fractions and Subtracting Fractions. 1.3 Video 8: Number Sense 1.7 - Fractions Work Video 9: Number Sense 1.9 - Fractions - Decimals - Percentages Video 10: Number Sense 1.8 - Multiplying Fractions Video 11: Number Sense 1.8b - Dividing Fractions