by David, 13 November 2019 | 0 comments

Difficulty: Fun Sienna’s teacher is writing up a wicked problem on the board. First, the teacher writes all the numbers from 1 to 99. Then they erase 10, 20, and all the other numbers that end in 0. “Listen up!” the teacher announces. “I want you to multiply all the numbers on the board.

Continue reading Massive multiplicationCategories:

by David, 30 October 2019 | 0 comments

Difficulty: Fun Sergio is an electrician repairing a power line. There’s a stretch of eight, evenly spaced power poles he’s working on. The distance from the first to the fourth is 120 metres. What’s the distance from the first to the eighth pole?

Continue reading Power pole problemsCategories:

by David, 16 October 2019 | 2 comments

Difficulty: Tricky I’ve got a square piece of paper, with lines for writing on both sides. Right now, the lines are running up and down the page. To get the lines running left and right, I could rotate the page, but that’s too boring. Can I do it by flipping the page instead? Scroll…

Continue reading Spin and flip brainteaserCategories:

by David, 2 October 2019 | 0 comments

Difficulty: Tricky Imogen has had enough of her goats getting into her veggie patch. She’s bought wire and poles, but before she starts building, she must work out what shape fence she needs.

Continue reading Perimeter pickleCategories:

by Jasmine, 18 September 2019 | 2 comments

Written by Kerry Dent Difficulty: Tricky On the expedition’s small BBQ, only two potato cakes will fit at the same time.

Continue reading BBQ brainteaserCategories:

by David, 4 September 2019 | 0 comments

While working on an old weaving machine, Aisha spied a dial that needed repairing. The dial had numbers counting upwards, evenly spaced around the outside. Although she couldn’t see the whole dial, she could see that the number 6 was directly opposite 17. Can you work out how many numbers there are on the dial?

Continue reading The difficult dialCategories:

by David, 21 August 2019 | 0 comments

Fred is a biologist doing an experiment with pademelons. They have a square paddock and four feeding bowls. They also have two laser detectors that each shoot a straight beam all the way across the paddock.

Continue reading Pademelon paddocks brainteaserCategories:

by David, 7 August 2019 | 2 comments

Terri was doing sums for her signwriting business. She worked out that one-third of six and two-thirds of eleven together made seven. Her maths might seem wonky, but she was completely correct. Can you work out what she was trying to do?

Continue reading A sign of the times brainteaserCategories:

by David, 24 July 2019 | 1 comments

There are three types of fruit in the fruit bowl: All pieces of fruit are bananas, except for three of them. All pieces of fruit are apples, except for four of them. All pieces of fruit are oranges, except for five of them.

Continue reading The full fruit bowl brainteaserCategories:

by David, 10 July 2019 | 0 comments

Alice, Bernice and Claire are all speedy bike riders. They decided to race against each other to find out who is fastest cyclist. They ran three races together. In two races, Alice beat Bernice. In two races, Bernice beat Claire.

Continue reading The speediest cyclistCategories: