Year 7 Working systematically

problem

Favourite

5 by 5 Mathdokus

Age

7 to 16

Challenge level

Can you use the clues to complete these 5 by 5 Mathematical Sudokus?

game

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The Remainders Game

Play this game and see if you can figure out the computer's chosen number.

problem

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Consecutive Numbers

Age

7 to 14

Challenge level

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

problem

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Dozens

Age

7 to 14

Challenge level

Can you select the missing digit(s) to find the largest multiple?

problem

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Missing Multipliers

Age

7 to 14

Challenge level

What is the smallest number of answers you need to reveal in order to work out the missing headers?

problem

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The Number Jumbler

Age

7 to 14

Challenge level

The Number Jumbler can always work out your chosen symbol. Can you work out how?

problem

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Two and Two

Age

7 to 16

Challenge level

How many solutions can you find to this sum? Each of the different letters stands for a different number.

problem

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Parallelogram It

Age

11 to 16

Challenge level

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a parallelogram.

problem

Favourite

Summing Consecutive Numbers

Age

11 to 14

Challenge level

15 = 7 + 8 and 10 = 1 + 2 + 3 + 4. Can you say which numbers can be expressed as the sum of two or more consecutive integers?

problem

Favourite

Number Daisy

Age

11 to 14

Challenge level

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?

problem

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Shady Symmetry

Age

11 to 14

Challenge level

How many different symmetrical shapes can you make by shading triangles or squares?

problem

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Number Pyramids

Age

11 to 14

Challenge level

Try entering different sets of numbers in the number pyramids. How does the total at the top change?

problem

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Square It

Age

11 to 16

Challenge level

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

problem

Favourite

Consecutive Seven

Age

11 to 14

Challenge level

Can you arrange these numbers into 7 subsets, each of three numbers, so that when the numbers in each are added together, they make seven consecutive numbers?

problem

Favourite

Factors and Multiples Puzzle

Age

11 to 14

Challenge level

Using your knowledge of the properties of numbers, can you fill all the squares on the board?

problem

Favourite

M, M and M

Age

11 to 14

Challenge level

If you are given the mean, median and mode of five positive whole numbers, can you find the numbers?

problem

Favourite

Multiples Sudoku

Age

11 to 14

Challenge level

Each clue in this Sudoku is the product of the two numbers in adjacent cells.

problem

Favourite

Sticky Numbers

Age

11 to 14

Challenge level

Can you arrange the numbers 1 to 17 in a row so that each adjacent pair adds up to a square number?

problem

Favourite

Going round in circles

Age

11 to 14

Challenge level

Mathematicians are always looking for efficient methods for solving problems. How efficient can you be?

problem

Favourite

Shifting Times Tables

Age

11 to 14

Challenge level

Can you find a way to identify times tables after they have been shifted up or down?

problem

Favourite

Magic Letters

Age

11 to 14

Challenge level

Charlie has made a Magic V. Can you use his example to make some more? And how about Magic Ls, Ns and Ws?

problem

Favourite

Cryptarithms

Age

11 to 14

Challenge level

Can you crack these cryptarithms?

problem

Favourite

Add to 200

Age

11 to 14

Challenge level

By selecting digits for an addition grid, what targets can you make?

$Guess \my Quad$

problem

Favourite

Guess my Quad

Age

11 to 14

Challenge level

How many questions do you need to identify my quadrilateral?

problem

Favourite

An Equilateral Triangular Problem

Age

11 to 14

Challenge level

Take an equilateral triangle and cut it into smaller pieces. What can you do with them?

problem

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Can you Make 100?

Age

11 to 14

Challenge level

How many ways can you find to put in operation signs (+, −, ×, ÷) to make 100?

problem

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Shape Products

Age

11 to 14

Challenge level

These eleven shapes each stand for a different number. Can you use the multiplication sums to work out what they are?

problem

Favourite

Almost One

Age

11 to 14

Challenge level

Choose some fractions and add them together. Can you get close to 1?

problem

Favourite

Squares in rectangles

Age

11 to 14

Challenge level

A 2 by 3 rectangle contains 8 squares and a 3 by 4 rectangle contains 20 squares. What size rectangle(s) contain(s) exactly 100 squares? Can you find them all?

Or search by topic

Number and algebra

Geometry and measure

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Working mathematically

Advanced mathematics

For younger learners

Year 7 Working Systematically

5 by 5 Mathdokus

The Remainders Game

Consecutive Numbers

Dozens

Missing Multipliers

The Number Jumbler

Two and Two

Parallelogram It

Summing Consecutive Numbers

Number Daisy

Shady Symmetry

Number Pyramids

Square It

Consecutive Seven

Factors and Multiples Puzzle

M, M and M

Multiples Sudoku

Sticky Numbers

Going round in circles

Shifting Times Tables

Magic Letters

Cryptarithms

Add to 200

Guess my Quad

An Equilateral Triangular Problem

Can you Make 100?

Shape Products

Almost One

Squares in rectangles