 Picture puzzles - solving simultaneous equations intuitively

Interactive practice questions

Each symbol has a value. The total sum of each row is shown alongside it.

We want to work out the value of each symbol.    $20$20    $8$8    $4$4 ?
a

What is the value of one triangle?

b

What is the value of one square?

c

What is the value of one circle?

d

What is the value of a triangle, a square and a circle?

That is, what number should replace the question mark?

Easy
Approx a minute

Each item has a price.

The total price of each row of items is shown alongside it.

We want to work out the price of each item.

Three students in a class bought some new equipment from the school stationery shop.

The items they each bought, and the total prices are shown below.

Scales 1 and 2 are in perfect balance.

How may As are needed to balance scale 3?

Outcomes

10D.AG1.01

Solve systems of two linear equations involving two variables, using the algebraic method of substitution or elimination