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Amy went into her local stationery shop. Her mum had given her £2.50 to spend.
Amy liked the look of some luminous pens, which cost 15p each, and some fancy pencils, which cost 10p each.
She bought four times as many pens as pencils and was given 40p change.
How many of each did she buy?
Take a counter and surround it by a ring of other counters that MUST touch two others. How many are needed?
We can arrange dots in a similar way to the 5 on a dice and they usually sit quite well into a rectangular shape. How many altogether in this 3 by 5? What happens for other sizes?
Sam sets up displays of cat food in his shop in triangular stacks. If Felix buys some, then how can Sam arrange the remaining cans in triangular stacks?