mental-arithmetic-6

One of the books used. Sample questions from the publisher’s website include: “share £550 in the ratio 𝟧 ∶ 𝟨” and “a parallelogram is drawn so that its smallest angle is one third the
size of its largest angle. How big is the largest angle?”

Clare Wallace

Clare (like gare) is a Chalkdust editor. In her spare time, she’s an assistant professor at Durham University. She likes Skittles, probability, and making the magazine look more like Cosmo.

Chalkdust dissertation prize 2025
Calling all final-year students! This is your opportunity to get your work published as a Chalkdust article.
Chalkdust dissertation prize
Calling all final-year students!
The big argument: What’s the best way to end a proof?
QED or $\square$?
Prize crossnumber, Issue 09
Win £100 of Maths Gear goodies by solving our famously fiendish crossnumber
Modelling blood
Blood is exceptionally complicated and its composition varies from person to person. So how do we begin to model it?
Significant figures: Sir Christopher Zeeman
Biography of Sir Christopher Zeeman