Working systematically

There are 549 NRICH Mathematical resources connected to Working systematically
Mini-Sudoku
problem

Mini-Sudoku

Age
11 to 14
Challenge level
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How many ways are there of completing the mini-sudoku?
Adjacent Additions
problem

Adjacent Additions

Age
14 to 16
Challenge level
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In a 7-digit numerical code, each group of four consecutive digits adds to 16, and each group of five consecutive digits adds to 19. What is the sum of all 7 digits?
Relative Time
problem

Relative Time

Age
14 to 16
Challenge level
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Albert Einstein is experimenting with two unusual clocks. At what time do they next agree?
Dice in a Corner
problem

Dice in a Corner

Age
7 to 11
Challenge level
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How could you arrange at least two dice in a stack so that the total of the visible spots is 18?
Polydron
problem

Polydron

Age
7 to 11
Challenge level
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This activity investigates how you might make squares and pentominoes from Polydron.
Ordered Ways of Working Upper Primary
list

Ordered Ways of Working Upper Primary

Age
7 to 11
Challenge level
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These activities lend themselves to systematic working in the sense that it helps if you have an ordered approach.
Ordered Ways of Working Lower Primary
list

Ordered Ways of Working Lower Primary

Age
5 to 7
Challenge level
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These activities lend themselves to systematic working in the sense that it helps if you have an ordered approach.