Compose and decompose 2D shapes, and show that area remains constant when rearranged
30 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest, every one with a full worked solution. Work through all 30 with your weekly-lesson access code.
Sample: the first question, solved
If you cut a rectangle in half along a line connecting the midpoints of its two longer sides, what two shapes do you get?
And one from the hard end
A square with area 16 units² is cut into 4 identical smaller squares, and then those 4 smaller squares are each cut in half diagonally to make 8 triangles. If all 8 triangles are rearranged into one long row, what is the total area of the row, and how do you know?
Solution shown after you try it in practice mode.
Work through all 30, easiest to hardest
Your Winny Score tracks you as the questions ramp up. Stuck on one? A real Winny Math tutor will walk you through it. First lesson free.
Start practicing