Adding and subtracting decimals 0 Overview Using this Resource Connecting to the Curriculum Marking Student Responses Working with Students Further Resources This task is about adding and subtracting decimal numbers. Question 1Change answer Solve the following equations. Solve the following equations. a) 0.75 + 5 = b) 0.8 + 9 = c) 5 + 0.3 + 11 + 2.4 + 0.28 = d) 0.8 - 0.3 = e) 6 - 0.4 = f) 64.3 - 9.62 = Task administration: Students should not use calculators. This task can be completed using pencil and paper or online with auto-marking. Level: 4 Curriculum info: Maths, Number and Algebra, Number Strategies Keywords: nemp, decimals, addition, subtraction Description of task: For this NEMP task students perform a range of addition and subtraction calculations using whole numbers and decimals. Learning Progression FrameworksThis resource can provide evidence of learning associated with Additive thinking, sets 7-8 within the Mathematics Learning Progressions Frameworks.Read more about the Learning Progressions Frameworks. Answers/responses: Y8 (09/1997) a) 5.75 49% b) 9.8 49% c) 18.98 30% d) 0.5 66% e) 5.6 41% f) 54.68 21% Diagnostic and formative information: Commentary Only 13 percent of the year 8 students correctly answered at least 80% items. A high proportion of the students could not calculate accurately using decimals. Checking the bank account Buying vegetables Which bottle size? Temperature changes City populations Buying electricity Changing weights Weighing for the post Bus prices Buying more CDs and DVDs
