QQQ – Transformations 5 Name __________________ 1 2 3 Define ‘image’. ________________________________ ________________________________ Reflect the following shape in the given line of symmetry. ____________________ 6 Rotate the following shape 90° clockwise about the indicated point. 7 The following object has been rotated 90° anticlockwise. Mark with a point the centre of rotation. 8 A point (3,-2) is reflected in the line y = -x. What is the resulting point? Describe the following transformation. _______________________________ _______________________________ _______________________________ 4 A point (3, -2) on a shape is translated by the vector (−1 ). What is the resulting 3 point? The following object was translated. __________________ Score ________ / 8 What was the translation vector? (you can assume each square represents a unit) ________________ www.drfrostmaths.com Award ___________ QQQ – Transformations – ANSWERS Notes for teacher: 5+ for Bronze Award, 6+ for Silver and 7+ for Gold. Results can be recorded on a spreadsheet template found in ‘Tracking and Assessment’. 1 Define ‘image’. The shape that results from some transformation of an object. 2 Reflect the following shape in the given line of symmetry. What was the translation vector? (you can assume each square represents a unit) (−3 ), give a half mark if they wrote (-3, 3). 3 5 A point (3, -2) on a shape is translated by the vector (−1 ). What is the resulting 3 point? (2, 1) 6 Rotate the following shape 90° clockwise about the indicated point. 3 Describe the following transformation. 7 The following object has been rotated 90° anticlockwise. Mark with a point the centre of rotation. A reflection in the line y = x (Note: It is NOT a rotation). 4 The following object was translated. www.drfrostmaths.com 8 A point (3,-2) is reflected in the line y = -x. What is the resulting point? (2, -3) www.drfrostmaths.com QQQ – Brackets and Equations ANSWERS 1a Simplify 2𝑥 + 𝑦 − 𝑥 6a 𝒙+𝒚 1b Simplify 2𝑥 × 3𝑥𝑦 2a 𝟔𝒙𝟐 𝒚 Simplify 𝑥 + 𝑥 + 𝑥 2 − 1 𝒙𝟑 + 𝟐𝒙𝟐 − 𝟏 3 5b Solve 6 − 𝑧 = 3 3 7 2b Simplify 2𝑥 2 𝑦 4𝑥𝑦 2 3 4 5a 8 𝒙𝟐 + 𝟑𝒙 − 𝟔 Expand the following brackets (and simplify) 2𝑥(𝑦 − 𝑥) − 𝑥(2𝑥 − 𝑦) 𝟑𝒙𝒚 − 𝟒𝒙𝟐 𝒐𝒓 𝒛=𝟗 Solve 3𝑥 − 1 = 𝑥 + 3 𝒙=𝟐 6b Solve 3(6 − 𝑧) = 1 − 2(2 − 2𝑧) 2 𝒙 𝟐𝒚 Expand the following brackets (and simplify). 𝑥(𝑥 + 1) + 2(𝑥 − 3) 𝒛 = 𝟏𝟗 𝒛=𝟑 The children in a family consist of Alice, Bob and Charles. Bob is three times as old as Alice and Charles is 2 years older than Alice. The sum of their ages is 27. How old is Alice? (Hint: let Alice’s age by 𝑥) Alice’s age = 5 The sum of two people’s ages is 20 times the difference of their ages. What is the ratio (i.e. relative size) of their ages? 𝒙 + 𝒚 = 𝟐𝟎(𝒙 − 𝒚) 𝒔𝒐 𝟏𝟗𝒙 = 𝟐𝟏𝒚 − 𝟒𝒙𝟐 + 𝟑𝒙𝒚 𝒊. 𝒆. 𝒓𝒂𝒕𝒊𝒐 𝒊𝒔 𝟐𝟏: 𝟏𝟗 𝟏𝟗 𝟐𝟏 (𝒐𝒓 𝟏𝟗: 𝟐𝟏 𝒐𝒓 𝒐𝒓 𝟐𝟏 𝟏𝟗 𝒐𝒓 𝟏. 𝟏𝟎𝟓 𝒐𝒓 𝟎. 𝟗𝟎𝟓) Solve 3𝑧 − 2 = 55 QQQ – Ratio & Map Scales - ANSWERS 1 2 3 4 5 Simplify the ratio 21:28 3:4 What’s the ratio of cats to dogs if there’s 63 cats and 54 dogs? 7:6 (or 63:54 will do!) The ratio of value of a gold watch and a silver watch is 5:3. The silver watch costs £120. How much does the gold one cost? £200 The ratio of boys to girls in a room is 4:5. There’s 270 people in total. How many boys are there? 120 boys You measure a distance of 4cm on the map. The scale is 1:10 000. What actual distance does this represent? (choose an appropriate www.drfrostmaths.com 6 7 8 unit) 400m or 0.4km (half mark for 40000cm) If the scale of a map is 2:100 000, then an actual distance of 130km appears how large on a map? (choose an appropriate unit) 2.6m or 260cm (half mark for 0.0026km) Two angles on a line have the ratio 4:5. What is the smaller angle? 80 degrees 1 Puffer fish fill 3 of a tank. Angel fish 1 fill of it. Find the ratio of Puffer 4 fish to Angel fish using whole numbers. 4:3 (don’t accept 3:4)