Challenges

Problems worth getting stuck on

A small shelf of curious problems, gathered for every family here. Pick one, sit down together, and if it bites back, June can work through it with your child.

3 of 21 challenges ·

Grade 5

Three problems that reward a second look

A fraction sum that folds up neatly, two fractions a hair apart, and one equation to work backwards -- three chances to look for structure before reaching for arithmetic.

3 problems

A thirtieth in three parts

Break 1/30 into three unit fractions, all with different denominators. There is more than one way -- checking a friend's answer is half the fun.

1 problem

The convenient sum

Nine improper fractions, one neat trick -- every term hides a whole one, and what is left folds up on itself.

1 problem