Karen Morrison 
Caribbean Primary Mathematics Workbook 4 6th edition [EPUB ebook] 

The best-known Primary Mathematics series in the Caribbean, updated and revised for the 21st Century. Practise and reinforce learning from the Student’s Book, with fun and inspiring additional exercises. – Focus on self-directed learning, problem-solving and raising standards with a series updated by practising teachers. – Engage students and make maths more relevant with real-life situations, showing Mathematics in daily life.- Encourage students to understand and build their own learning with reinforcement exercises for all key skills and concepts.