Resources tagged with: Working systematically

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Broad Topics > Thinking Mathematically > Working systematically

A Mixed-up Clock

Age 7 to 11Challenge Level

There is a clock-face where the numbers have become all mixed up. Can you find out where all the numbers have got to from these ten statements?

Number Detective

Age 5 to 11Challenge Level

Follow the clues to find the mystery number.

Here to There 1 2 3

Age 5 to 7Challenge Level

Move from the START to the FINISH by moving across or down to the next square. Can you find a route to make these totals?

Greater Than or Less Than?

Age 7 to 11Challenge Level

Use the numbers and symbols to make this number sentence correct. How many different ways can you find?

Robot Monsters

Age 5 to 7Challenge Level

Use these head, body and leg pieces to make Robot Monsters which are different heights.

One to Fifteen

Age 7 to 11Challenge Level

Can you put the numbers from 1 to 15 on the circles so that no consecutive numbers lie anywhere along a continuous straight line?

One of Thirty-six

Age 5 to 7Challenge Level

Can you find the chosen number from the grid using the clues?

Being Resourceful - Primary Number

Age 5 to 11Challenge Level

Number problems at primary level that require careful consideration.

Arranging the Tables

Age 7 to 11Challenge Level

There are 44 people coming to a dinner party. There are 15 square tables that seat 4 people. Find a way to seat the 44 people using all 15 tables, with no empty places.

Seven Flipped

Age 7 to 11Challenge Level

Investigate the smallest number of moves it takes to turn these mats upside-down if you can only turn exactly three at a time.

Multiply Multiples 3

Age 7 to 11Challenge Level

Have a go at balancing this equation. Can you find different ways of doing it?

Rabbits in the Pen

Age 7 to 11Challenge Level

Using the statements, can you work out how many of each type of rabbit there are in these pens?

What Could it Be?

Age 5 to 7Challenge Level

In this calculation, the box represents a missing digit. What could the digit be? What would the solution be in each case?

Mrs Beeswax

Age 5 to 7Challenge Level

In how many ways could Mrs Beeswax put ten coins into her three puddings so that each pudding ended up with at least two coins?

A-magical Number Maze

Age 7 to 11Challenge Level

This magic square has operations written in it, to make it into a maze. Start wherever you like, go through every cell and go out a total of 15!

Six Is the Sum

Age 7 to 11Challenge Level

What do the digits in the number fifteen add up to? How many other numbers have digits with the same total but no zeros?

1 to 8

Age 7 to 11Challenge Level

Place the numbers 1 to 8 in the circles so that no consecutive numbers are joined by a line.

Consecutive Numbers

Age 7 to 14Challenge Level

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

The Pied Piper of Hamelin

Age 7 to 11Challenge Level

This problem is based on the story of the Pied Piper of Hamelin. Investigate the different numbers of people and rats there could have been if you know how many legs there are altogether!

Seven Square Numbers

Age 7 to 11Challenge Level

Add the sum of the squares of four numbers between 10 and 20 to the sum of the squares of three numbers less than 6 to make the square of another, larger, number.

Multiplication Squares

Age 7 to 11Challenge Level

Can you work out the arrangement of the digits in the square so that the given products are correct? The numbers 1 - 9 may be used once and once only.

Reach 100

Age 7 to 11Challenge Level

Choose four different digits from 1-9 and put one in each box so that the resulting four two-digit numbers add to a total of 100.

The Dice Train

Age 7 to 11Challenge Level

This dice train has been made using specific rules. How many different trains can you make?

Spell by Numbers

Age 7 to 11Challenge Level

Can you substitute numbers for the letters in these sums?

The Moons of Vuvv

Age 7 to 11Challenge Level

The planet of Vuvv has seven moons. Can you work out how long it is between each super-eclipse?

Page Numbers

Age 7 to 11 ShortChallenge Level

Exactly 195 digits have been used to number the pages in a book. How many pages does the book have?

Pouring the Punch Drink

Age 7 to 11Challenge Level

There are 4 jugs which hold 9 litres, 7 litres, 4 litres and 2 litres. Find a way to pour 9 litres of drink from one jug to another until you are left with exactly 3 litres in three of the jugs.

All the Digits

Age 7 to 11Challenge Level

This multiplication uses each of the digits 0 - 9 once and once only. Using the information given, can you replace the stars in the calculation with figures?

Growing Garlic

Age 5 to 7Challenge Level

Ben and his mum are planting garlic. Can you find out how many cloves of garlic they might have had?

Magic Vs

Age 7 to 11Challenge Level

Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?

Sitting Round the Party Tables

Age 5 to 11Challenge Level

Sweets are given out to party-goers in a particular way. Investigate the total number of sweets received by people sitting in different positions.

Take Three Numbers

Age 7 to 11Challenge Level

What happens when you add three numbers together? Will your answer be odd or even? How do you know?

Jumping Squares

Age 5 to 7Challenge Level

In this problem it is not the squares that jump, you do the jumping! The idea is to go round the track in as few jumps as possible.

Age 5 to 11Challenge Level

How could you put these three beads into bags? How many different ways can you do it? How could you record what you've done?

Curious Number

Age 7 to 11Challenge Level

Can you order the digits from 1-3 to make a number which is divisible by 3 so when the last digit is removed it becomes a 2-figure number divisible by 2, and so on?

Neighbours

Age 7 to 11Challenge Level

In a square in which the houses are evenly spaced, numbers 3 and 10 are opposite each other. What is the smallest and what is the largest possible number of houses in the square?

Today's Date - 01/06/2009

Age 5 to 11Challenge Level

What do you notice about the date 03.06.09? Or 08.01.09? This challenge invites you to investigate some interesting dates yourself.

Prison Cells

Age 7 to 11Challenge Level

There are 78 prisoners in a square cell block of twelve cells. The clever prison warder arranged them so there were 25 along each wall of the prison block. How did he do it?

Twenty Divided Into Six

Age 7 to 11Challenge Level

Katie had a pack of 20 cards numbered from 1 to 20. She arranged the cards into 6 unequal piles where each pile added to the same total. What was the total and how could this be done?

Two Egg Timers

Age 7 to 11Challenge Level

You have two egg timers. One takes 4 minutes exactly to empty and the other takes 7 minutes. What times in whole minutes can you measure and how?

ABC

Age 7 to 11Challenge Level

In the multiplication calculation, some of the digits have been replaced by letters and others by asterisks. Can you reconstruct the original multiplication?

The Puzzling Sweet Shop

Age 5 to 11Challenge Level

There were chews for 2p, mini eggs for 3p, Chocko bars for 5p and lollypops for 7p in the sweet shop. What could each of the children buy with their money?

Dart Target

Age 7 to 11Challenge Level

This task, written for the National Young Mathematicians' Award 2016, invites you to explore the different combinations of scores that you might get on these dart boards.

Two Spinners

Age 5 to 7Challenge Level

What two-digit numbers can you make with these two dice? What can't you make?

Multiply Multiples 1

Age 7 to 11Challenge Level

Can you complete this calculation by filling in the missing numbers? In how many different ways can you do it?

Lots of Lollies

Age 5 to 7Challenge Level

Frances and Rishi were given a bag of lollies. They shared them out evenly and had one left over. How many lollies could there have been in the bag?

Zargon Glasses

Age 7 to 11Challenge Level

Zumf makes spectacles for the residents of the planet Zargon, who have either 3 eyes or 4 eyes. How many lenses will Zumf need to make all the different orders for 9 families?

How Much Did it Cost?

Age 7 to 11Challenge Level

Use your logical-thinking skills to deduce how much Dan's crisps and ice-cream cost altogether.