1 out of 3
How good are you at estimating angles?
1 out of 3
Play this game and see if you can figure out the computer's chosen number.
1 out of 3
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
1 out of 3
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.
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Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?
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Use your knowledge of place value to try to win this game. How will you maximise your score?
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In these multiplication and division games, you'll need to think strategically to get closest to the target.
2 out of 3
Ten cards are put into five envelopes so that there are two cards in each envelope. The sum of the numbers inside it is written on each envelope. What numbers could be inside the envelopes?
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I'm thinking of a number. My number is both a multiple of 5 and a multiple of 6. What could my number be?
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A game in which players take it in turns to choose a number. Can you block your opponent?
3 out of 3
How many solutions can you find to this sum? Each of the different letters stands for a different number.
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Can you find six numbers to go in the daisy from which you can make all the numbers from 1 to a number bigger than 25?
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In how many ways can you fit all three pieces together to make shapes with line symmetry?
1 out of 3
Are these games fair? How can you tell?
1 out of 3
Find the frequency distribution for ordinary English, and use it to help you crack the code.
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If you are given the mean, median and mode of five positive whole numbers, can you find the numbers?
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Each clue in this Sudoku is the product of the two numbers in adjacent cells.
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Can you find sets of numbers which satisfy each of our mean, median, mode and range conditions?
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Can you crack these cryptarithms?
1 out of 3
How many ways can you find to put in operation signs (+, −, ×, ÷) to make 100?
1 out of 3
Choose some fractions and add them together. Can you get close to 1?
1 out of 3
In the 2020 Olympic Games, sport climbing was introduced for the first time, and something very interesting happened with the scoring system. Can you find out what was interesting about it?
2 out of 3
A 2 by 3 rectangle contains 8 squares and a 3 by 4 rectangle contains 20 squares. What sizes of rectangle contain exactly 100 squares? Can you find them all?
