Making numbers II 0 Overview Using this Resource Connecting to the Curriculum Marking Student Responses Working with Students Further Resources This task is about making numbers of different sizes. Question a) Ina wrote down all the numbers she could using the three digits 9, 4, and 7 497 974 749 947 794 479 i) What was the lowest number Ina made? 497 974 749 947 794 479 Question ii) What was the highest number she made? 497 974 749 947 794 479 Question 1Change answer b) Tana wrote down different numbers using these digits. 7 7 3 b) Tana wrote down different numbers using these digits. 7 7 3 i) What was the lowest number Tana could have written using only two of these digits? ii) What was the highest number he could have written using only two of these digits? iii) What was the lowest number he could have written using all three of these digits? iv) What was the highest number he could have written using all three of these digits? Task administration: This task can be completed with pencil and paper or online (with auto marking displayed to students). Level: 2 Curriculum info: Maths, Number and Algebra, Number Knowledge Keywords: place value, whole numbers, ordering numbers Description of task: Students identify lowest and highest values from 2- and 3-digit whole numbers. Answers/responses: Y4 (11/98) a) i) ii) 479 974 easy easy b) i) ii) iii) iv) 37 77 377 773 moderate moderate moderate moderate Diagnostic and formative information: Common error Likely calculation Likely reason b) i)- iv) 3, 7, 3, 7 Uses only one digit rather than two or three. b) i) ii) 73 37 Confuses lowest and highest. b) i) ii) iii) iv) 10 14 17 17 7 + 3 7 + 7 3 + 7 + 7 3 + 7 + 7 Tries to do addition on single digits to get biggest number. [Some children may try multiplication and get 21, 49, 147, 147 respectively.] Skip counting Making numbers Bags for sale Sports day points Jet planes Ordering numbers II Ordering numbers III Equipment Calculator Ordering numbers
