You may also like

problem icon

Prompt Cards

These two group activities use mathematical reasoning - one is numerical, one geometric.

problem icon

Consecutive Numbers

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

problem icon

Exploring Wild & Wonderful Number Patterns

EWWNP means Exploring Wild and Wonderful Number Patterns Created by Yourself! Investigate what happens if we create number patterns using some simple rules.

Super Shapes

Stage: 2 Short Challenge Level: Challenge Level:1

Each of the following shapes has a value:

 

 

 

green triangle $= 7$ orange rectangle. $= 17$ red circle. $= \; ?$

The value of the circle changes in each of the following problems.
Can you discover its value in each problem, if the value of the shapes are being added together?

(a) $= 25$
(b) $= 51$
(c) $=136$
(d) $=48$
(e) $=100$