Chocolate milk homework

Chocolate milk homework

Pencil and paper
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Further Resources
This task is about what happens when you add 1 or multiply by zero.
James spilt chocolate milk over his maths homework sheet.
 
a) Write the missing number on each milk spot to finish each equation.
  i)
4 + = 4
 ii) + 9 = 9
         
  iii) 17 × = 17 iv) × 7 = 7
         
         
b)
Write the missing sign (+ or × ) on each milk spot to finish each equation.
  i) 8 0 = 8 ii) 4 1 = 4
         
  iii) 1 10 = 10 iv) 0 6 = 6
Task administration: 
This task is completed with pencil and paper only.
Level:
2
Curriculum info: 
Maths, Number and Algebra, Equations and expressions
Keywords: 
equations, properties of zero, properties of one, additive identity
Description of task: 
Students demonstrate their understanding of the properties of one and zero by completing missing numbers or operations in equations.
Answers/responses: 
    Y4 (06/2000)
a) i)
ii)
iii)
iv)		 0
0
1
1		 all 4 correct – easy
 
3 correct – easy
b) i)
ii)
iii)
iv)		 +
´
´
+		 all 4 correct – easy
 
3 correct – very easy

NEMP

Report 9: Mathematics 1997.  Addition facts, p. 14.  The results from this question imply that students had difficulty with addition problems that were presented with the 0 first.  A focus on adding numbers to zero is suggested.
Report 37: Mathematics 2005. Number Helper, p.15, Questions 4 + 5. Just over 50% of Year 4 students were able to identify 0 as the number you can add or take away from 8 and 8 will stay the same.

For further information on the ideas surrounding the additive identity, refer to the Algebraic thinking concept map.