Other tags that relate to Growing Garlic
Factors and multiples. Generalising. Working systematically. Addition & subtraction. Interactivities. Investigations. Odd and even numbers. Visualising. Combinations. Multiplication & division.There are 61 results
Broad Topics > Properties of Numbers > Odd and even numbers
Seven Flipped
Age 7 to 11
Challenge 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.
Arrangements
Age 7 to 11
Challenge Level
Is it possible to place 2 counters on the 3 by 3 grid so that there is an even number of counters in every row and every column? How about if you have 3 counters or 4 counters or....?
Curious Number
Age 7 to 11
Challenge 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?
One of Thirty-six
Age 5 to 7
Challenge Level
Can you find the chosen number from the grid using the clues?
Break it Up!
Age 5 to 11
Challenge Level
In how many different ways can you break up a stick of 7 interlocking cubes? Now try with a stick of 8 cubes and a stick of 6 cubes.
Take Three Numbers
Age 7 to 11
Challenge Level
What happens when you add three numbers together? Will your answer be odd or even? How do you know?
What Could it Be?
Age 5 to 7
Challenge Level
In this calculation, the box represents a missing digit. What could the digit be? What would the solution be in each case?
Magic Vs
Age 7 to 11
Challenge Level
Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?
Sets of Four Numbers
Age 7 to 11
Challenge Level
There are ten children in Becky's group. Can you find a set of numbers for each of them? Are there any other sets?
A Mixed-up Clock
Age 7 to 11
Challenge 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 Round Up
Age 5 to 7
Challenge Level
Arrange the numbers 1 to 6 in each set of circles below. The sum of each side of the triangle should equal the number in its centre.
Sets of Numbers
Age 7 to 11
Challenge Level
How many different sets of numbers with at least four members can you find in the numbers in this box?
Ring a Ring of Numbers
Age 5 to 7
Challenge Level
Choose four of the numbers from 1 to 9 to put in the squares so that the differences between joined squares are odd.
Number Differences
Age 7 to 11
Challenge Level
Place the numbers from 1 to 9 in the squares below so that the difference between joined squares is odd. How many different ways can you do this?
Share Bears
Age 5 to 7
Challenge Level
Yasmin and Zach have some bears to share. Which numbers of bears can they share so that there are none left over?
Crossings
Age 7 to 11
Challenge Level
In this problem we are looking at sets of parallel sticks that cross each other. What is the least number of crossings you can make? And the greatest?
Pairs of Numbers
Age 5 to 7
Challenge Level
If you have ten counters numbered 1 to 10, how many can you put into pairs that add to 10? Which ones do you have to leave out? Why?
Even and Odd
Age 5 to 7
Challenge Level
This activity is best done with a whole class or in a large group. Can you match the cards? What happens when you add pairs of the numbers together?
Two Numbers Under the Microscope
Age 5 to 7
Challenge Level
This investigates one particular property of number by looking closely at an example of adding two odd numbers together.
Cube Bricks and Daisy Chains
Age 5 to 7
Challenge Level
Daisy and Akram were making number patterns. Daisy was using beads that looked like flowers and Akram was using cube bricks. First they were counting in twos.
Carroll Diagrams
Age 5 to 11
Challenge Level
Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?
Down to Nothing
Age 7 to 11
Challenge Level
A game for 2 or more people. Starting with 100, subratct a number from 1 to 9 from the total. You score for making an odd number, a number ending in 0 or a multiple of 6.
Always, Sometimes or Never? Number
Age 7 to 11
Challenge Level
Are these statements always true, sometimes true or never true?
Domino Sorting
Age 5 to 7
Challenge Level
Try grouping the dominoes in the ways described. Are there any left over each time? Can you explain why?
Play to 37
Age 7 to 11
Challenge Level
In this game for two players, the idea is to take it in turns to choose 1, 3, 5 or 7. The winner is the first to make the total 37.
Square Subtraction
Age 7 to 11
Challenge Level
Look at what happens when you take a number, square it and subtract your answer. What kind of number do you get? Can you prove it?
Part the Piles
Age 7 to 11
Challenge Level
Try to stop your opponent from being able to split the piles of counters into unequal numbers. Can you find a strategy?
Numbers as Shapes
Age 5 to 7
Challenge Level
Use cubes to continue making the numbers from 7 to 20. Are they sticks, rectangles or squares?
Sorting Numbers
Age 5 to 7
Challenge Level
Can you sort numbers into sets? Can you give each set a name?
Grouping Goodies
Age 5 to 7
Challenge Level
Pat counts her sweets in different groups and both times she has some left over. How many sweets could she have had?
I Like ...
Age 5 to 7
Challenge Level
Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?
Number Tracks
Age 7 to 11
Challenge Level
Ben’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?
Odd Times Even
Age 5 to 7
Challenge Level
This problem looks at how one example of your choice can show something about the general structure of multiplication.
Largest Even
Age 5 to 7
Challenge Level
How would you create the largest possible two-digit even number from the digit I've given you and one of your choice?
Take One Example
Age 5 to 11
This article introduces the idea of generic proof for younger children and illustrates how one example can offer a proof of a general result through unpacking its underlying structure.
Always, Sometimes or Never?
Age 5 to 11
Challenge Level
Are these statements relating to odd and even numbers always true, sometimes true or never true?
How Odd
Age 5 to 7
Challenge Level
This problem challenges you to find out how many odd numbers there are between pairs of numbers. Can you find a pair of numbers that has four odds between them?
What Do You Need?
Age 7 to 11
Challenge Level
Four of these clues are needed to find the chosen number on this grid and four are true but do nothing to help in finding the number. Can you sort out the clues and find the number?
More Numbers in the Ring
Age 5 to 7
Challenge Level
If there are 3 squares in the ring, can you place three different numbers in them so that their differences are odd? Try with different numbers of squares around the ring. What do you notice?
Our Numbers
Age 5 to 7
Challenge Level
These spinners will give you the tens and unit digits of a number. Can you choose sets of numbers to collect so that you spin six numbers belonging to your sets in as few spins as possible?
Multiplication Series: Number Arrays
Age 5 to 11
This article for teachers describes how number arrays can be a useful representation for many number concepts.
What Number?
Age 5 to 7 Short
Challenge Level
I am less than 25. My ones digit is twice my tens digit. My digits add up to an even number.
Odds and Threes
Age 7 to 11
Challenge Level
A game for 2 people using a pack of cards Turn over 2 cards and try to make an odd number or a multiple of 3.
Odd Squares
Age 7 to 11
Challenge Level
Think of a number, square it and subtract your starting number. Is the number you’re left with odd or even? How do the images help to explain this?
The Thousands Game
Age 7 to 11
Challenge Level
Each child in Class 3 took four numbers out of the bag. Who had made the highest even number?
Diagonal Trace
Age 7 to 11
Challenge Level
You can trace over all of the diagonals of a pentagon without lifting your pencil and without going over any more than once. Can the same thing be done with a hexagon or with a heptagon?
NRICH is part of the family of activities in the Millennium Mathematics Project.