1. ADDITION USING PARTITIONING The following questions are multiple choice. When working out these questions mentally you must use the following method. e.g. 48 + 69 = ? 40 + 60 = 100 8 + 9 = 17 100 + 17 = 117 Therefore 48 + 69 = 117 By Auveen Twomey

2. Task 1 Use the method shown previously to answer the following multiple choice questions. Can you explain to a partner how you partitioned each number? 1. 64 + 82 = A. 145B. 146C. 156 2. 37 + 59 =A. 96B. 82C. 94 3. 41 + 74 =A. 85B. 115C. 105 4. 89 + 62 =A. 146B. 151C. 153 5. 37 + 96 =A. 131B. 132C. 133

3. Answers to Task 1 1. 64 + 82 = 146 60 + 80 = 140 4 + 2 = 6 140 + 6 = 146 2. 37 + 59 = 96 30 + 50 = 80 7 + 9 = 16 80 + 16 = 96 3. 41 + 74 = 115 40 + 70 = 110 1 + 4 = 5 110 + 5 = 115

4. Answers to Task 1 (continued) 4. 89 + 62 = 151 80 + 60 = 140 9 + 2 = 11 140 + 11 = 151 5. 37 + 96 = 133 30 + 90 = 120 7 + 6 = 13 120 + 13 = 133

5. Task 2 Write 4 calculations and work out the answers. Then pass them to your partner (without the answers) to complete. When they have finished mark their work. Remember they must use the PARTITIONING method!