Resources tagged with: Multiplication & division

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There are 153 results

Broad Topics > Calculations and Numerical Methods > Multiplication & division

Month Mania

Age 5 to 11Challenge Level

Can you design a new shape for the twenty-eight squares and arrange the numbers in a logical way? What patterns do you notice?

It Was 2010!

Age 5 to 11Challenge Level

If the answer's 2010, what could the question be?

Exploring Wild & Wonderful Number Patterns

Age 7 to 11Challenge Level

EWWNP means Exploring Wild and Wonderful Number Patterns Created by Yourself! Investigate what happens if we create number patterns using some simple rules.

Sam's Quick Sum

Age 7 to 11Challenge Level

What is the sum of all the three digit whole numbers?

Sept03 Sept03 Sept03

Age 7 to 11Challenge Level

This number has 903 digits. What is the sum of all 903 digits?

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In the multiplication calculation, some of the digits have been replaced by letters and others by asterisks.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

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?

Sending Cards

Age 7 to 11Challenge Level

This challenge asks you to investigate the total number of cards that would be sent if four children send one to all three others. How many would be sent if there were five children? Six?

Function Machines

Age 7 to 11Challenge Level

If the numbers 5, 7 and 4 go into this function machine, what numbers will come out?

The 24 Game

Age 7 to 11Challenge Level

There are over sixty different ways of making 24 by adding, subtracting, multiplying and dividing all four numbers 4, 6, 6 and 8 (using each number only once). How many can you find?

Next Number

Age 7 to 11 ShortChallenge Level

Find the next number in this pattern: 3, 7, 19, 55 ...

Route Product

Age 7 to 11Challenge Level

Find the product of the numbers on the routes from A to B. Which route has the smallest product? Which the largest?

The Deca Tree

Age 7 to 11Challenge Level

Find out what a Deca Tree is and then work out how many leaves there will be after the woodcutter has cut off a trunk, a branch, a twig and a leaf.

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.

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!

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?

Calendar Calculations

Age 7 to 11Challenge Level

Try adding together the dates of all the days in one week. Now multiply the first date by 7 and add 21. Can you explain what happens?

X Is 5 Squares

Age 7 to 11Challenge Level

Can you arrange 5 different digits (from 0 - 9) in the cross in the way described?

Forgot the Numbers

Age 7 to 11Challenge Level

On my calculator I divided one whole number by another whole number and got the answer 3.125. If the numbers are both under 50, what are they?

Which Symbol?

Age 7 to 11Challenge Level

Choose a symbol to put into the number sentence.

Doplication

Age 7 to 11Challenge Level

We can arrange dots in a similar way to the 5 on a dice and they usually sit quite well into a rectangular shape. How many altogether in this 3 by 5? What happens for other sizes?

Dice and Spinner Numbers

Age 7 to 11Challenge Level

If you had any number of ordinary dice, what are the possible ways of making their totals 6? What would the product of the dice be each time?

Sometimes We Lose Things

Age 7 to 11Challenge Level

Well now, what would happen if we lost all the nines in our number system? Have a go at writing the numbers out in this way and have a look at the multiplications table.

It Figures

Age 7 to 11Challenge Level

Suppose we allow ourselves to use three numbers less than 10 and multiply them together. How many different products can you find? How do you know you've got them all?

Magic Constants

Age 7 to 11Challenge Level

In a Magic Square all the rows, columns and diagonals add to the 'Magic Constant'. How would you change the magic constant of this square?

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!

How Old?

Age 7 to 11Challenge Level

Cherri, Saxon, Mel and Paul are friends. They are all different ages. Can you find out the age of each friend using the information?

The Clockmaker's Birthday Cake

Age 7 to 11Challenge Level

The clockmaker's wife cut up his birthday cake to look like a clock face. Can you work out who received each piece?

Bundles of Cubes

Age 7 to 11Challenge Level

Watch this animation. What do you notice? What happens when you try more or fewer cubes in a bundle?

Napier's Bones

Age 7 to 11Challenge Level

The Scot, John Napier, invented these strips about 400 years ago to help calculate multiplication and division. Can you work out how to use Napier's bones to find the answer to these multiplications?

Rocco's Race

Age 7 to 11 ShortChallenge Level

Rocco ran in a 200 m race for his class. Use the information to find out how many runners there were in the race and what Rocco's finishing position was.

Throw a 100

Age 7 to 11Challenge Level

Can you score 100 by throwing rings on this board? Is there more than way to do it?

Oranges and Lemons

Age 7 to 11Challenge Level

On the table there is a pile of oranges and lemons that weighs exactly one kilogram. Using the information, can you work out how many lemons there are?

Mobile Numbers

Age 5 to 11Challenge Level

In this investigation, you are challenged to make mobile phone numbers which are easy to remember. What happens if you make a sequence adding 2 each time?

Penta Post

Age 7 to 11Challenge Level

Here are the prices for 1st and 2nd class mail within the UK. You have an unlimited number of each of these stamps. Which stamps would you need to post a parcel weighing 825g?

Code Breaker

Age 7 to 11Challenge Level

This problem is based on a code using two different prime numbers less than 10. You'll need to multiply them together and shift the alphabet forwards by the result. Can you decipher the code?

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?

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.

Number Tracks

Age 7 to 11Challenge Level

Benâ€™s class were cutting up number tracks. First they cut them into twos and added up the numbers on each piece. What patterns could they see?

Clock Face

Age 7 to 11Challenge Level

Where can you draw a line on a clock face so that the numbers on both sides have the same total?

One Million to Seven

Age 7 to 11Challenge Level

Start by putting one million (1 000 000) into the display of your calculator. Can you reduce this to 7 using just the 7 key and add, subtract, multiply, divide and equals as many times as you like?

Age 7 to 11Challenge Level

Use the information to work out how many gifts there are in each pile.

Asteroid Blast

Age 7 to 11Challenge Level

A game for 2 people. Use your skills of addition, subtraction, multiplication and division to blast the asteroids.

The Money Maze

Age 7 to 11Challenge Level

Go through the maze, collecting and losing your money as you go. Which route gives you the highest return? And the lowest?

Sumo

Age 7 to 11Challenge Level

A number game requiring a strategy.

Alphabetti Sudoku

Age 11 to 16Challenge Level

This Sudoku requires you to do some working backwards before working forwards.

Integrated Product Sudoku

Age 11 to 16Challenge Level

This Sudoku puzzle can be solved with the help of small clue-numbers on the border lines between pairs of neighbouring squares of the grid.

Cows and Sheep

Age 7 to 11Challenge Level

Use your logical reasoning to work out how many cows and how many sheep there are in each field.

Machines

Age 7 to 11Challenge Level

What is happening at each box in these machines?

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?