6. 1 What is a Rational Number? – Rational Number: All numbers (including ______________), including _______________ and _________________ decimals Not a rational number: Write 2 rational numbers between -0.25 and -0.26 Order from greatest to least: fractions must have a ________________ ____________________ 6. 2 Adding Rational Numbers – – Ex: fractions must have a _____________ _________________ 6. 3 Subtracting Rational Numbers– – Ex: for fractions, first see if you can cross ______________; then multiply straight 6. 4 Multiplying Rational Numbers – – across the ____________, then straight across the __________________ Ex: _______________ and _______________ 6. 5 Dividing Rational Numbers – – Ex: - _____________________ 6. 6 Order of Operations with Rational Numbers – Ex: Unit 7 Review Notes – Circle Geometry 7. 1 Properties of Tangents to a Circle – Tangents touch a circle at only _______ point. Tangents are ______________ to the radius. Forms a ____° angle. Use the Pythagorean Theorem to solve ___________ triangles. Formula: is the __________________ ________________) (where “c” 7. 2 Properties of Chords in a Circle –
6. 1 – What is a Rational Number? Rational Number: All numbers (including ______________), including _______________ and _________________ decimals Not a rational number: Write 2 rational numbers between -0.25 and -0.26 Order from greatest to least: 6. 2 – Adding Rational Numbers – fractions must have a ________________ ____________________ Ex: 6. 3 – Subtracting Rational Numbers– fractions must have a _____________ _________________ Ex: 6. 4 – Multiplying Rational Numbers – for fractions, first see if you can cross ______________; then multiply straight across the ____________, then straight across the __________________ Ex: 6. 5 – Dividing Rational Numbers – _______________ and _______________ Ex: 6. 6 – Order of Operations with Rational Numbers - _____________________ Ex: Unit 7 Review Notes – Circle Geometry 7. 1 – Properties of Tangents to a Circle Tangents touch a circle at only _______ point. Tangents are ______________ to the radius. Forms a ____° angle. Use the Pythagorean Theorem to solve ___________ triangles. Formula: __________________ (where “c” is the ________________) 7. 2 – Properties of Chords in a Circle
grade_9_math_exam_review_notes.docx