Year 3-5 Mathematics Open-ended Activities

1
Year 3-5 Mathematics Open-ended Activities

• Number Place Value

2
Place Value

• How many ways can you rename 1265?

Open-ended Maths Activities by Peter Sullivan and
Pat Lilburn
3
Place Value

• How many numbers can you make using the digits 1,
  2, 3 and 4? You can only use each digit once in
  each number.

Open-ended Maths Activities by Peter Sullivan and
Pat Lilburn
4
Place Value

• A number has been rounded off to 1200. What might
  the number be?

Open-ended Maths Activities by Peter Sullivan and
Pat Lilburn
5
Number

• Create a pattern that starts at 91 that someone
  else can continue.

Open-ended Maths Activities by Peter Sullivan and
Pat Lilburn
6
Number

• The number 8 is halfway between two numbers. What
  might those two numbers be?

Open-ended Maths Activities by Peter Sullivan and
Pat Lilburn
7
Operations

• I have some marbles. I give some away to my
  friends and I am left with 15. How many marbles
  might I have started with and how many might I
  have given away?

Open-ended Maths Activities by Peter Sullivan and
Pat Lilburn
8
Operations

• What might the missing numbers be?
• ___ x ___ 50

Teaching and Assessing Maths through Open-ended
Activities by Pat Lilburn Irene Sawczak
9
Operations

• Describe how you would subtract 19 from 83 in
  your head. What other subtractions could you do
  using a similar method?

Teaching and Assessing Maths through Open-ended
Activities by Pat Lilburn Irene Sawczak
10
Place Value

• I am thinking of a number between 8000 and 9000.
  Its hundreds digit is 5 and its ones digit is 2.
  What might the number be?

Teaching and Assessing Maths through Open-ended
Activities by Pat Lilburn Irene Sawczak
11
Operations

• The number 17 cannot be divided equally by either
  2 or 3. What other numbers are not divisible by
  either 2 or 3?

Teaching and Assessing Maths through Open-ended
Activities by Pat Lilburn Irene Sawczak