Biscuit Decorations
Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?
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Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?
How would you find out how many football cards Catrina has collected?
Yasmin and Zach have some bears to share. Which numbers of bears can they share so that there are none left over?
How many trains can you make which are the same length as Matt's and Katie's, using rods that are identical?
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Try grouping the dominoes in the ways described. Are there any left over each time? Can you explain why?
If you count from 1 to 20 and clap more loudly on the numbers in the two times table, as well as saying those numbers loudly, which numbers will be loud?
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?
Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?
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?
Daisy and Akram have made some number patterns. Can you find out which pattern is longer?
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?
This investigates one particular property of number by looking closely at an example of adding two odd numbers together.
In this calculation, the box represents a missing digit. What could the digit be? What would the solution be in each case?
Throw the dice and decide whether to double or halve the number. Will you be the first to reach the target?
What do you see as you watch this video? Can you create a similar video for the number 12?
It's Sahila's birthday and she is having a party. How could you answer these questions using a picture, with things, with numbers or symbols?
How will you work out which numbers have been used to create this multiplication square?
On Friday the magic plant was only 2 centimetres tall. Every day it doubled its height. How tall was it on Monday?
Kimie and Sebastian were making sticks from interlocking cubes and lining them up. Can they make their lines the same length? Can they make any other lines?
On a farm there were some hens and sheep. Altogether there were 8 heads and 22 feet. How many hens were there?
Choose four of the numbers from 1 to 9 to put in the squares so that the differences between joined squares are odd.
The Man is much smaller than us. Can you use the picture of him next to a mug to estimate his height and how much tea he drinks?
Ahmed is making rods using different numbers of cubes. Which rod is twice the length of his first rod?
Annie and Ben are playing a game with a calculator. What was Annie's secret number?
Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?
How many legs do each of these creatures have? How many pairs is that?
Can you work out how many flowers there will be on the Amazing Splitting Plant after it has been growing for six weeks?
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.
Pat counts her sweets in different groups and both times she has some left over. How many sweets could she have had?
At the beginning of May, Tom put his tomato plant outside. On the same day he sowed a bean in another pot. When will the two be the same height?
Use the information about Sally and her brother to find out how many children there are in the Brown family.
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?
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?
In how many different ways can you break up a stick of seven interlocking cubes? Now try with a stick of eight cubes and a stick of six cubes. What do you notice?
Here is a picnic that Petros and Michael are going to share equally. Can you tell us what each of them will have?
Ben and his mum are planting garlic. Can you find out how many cloves of garlic they might have had?
"Ip dip sky blue! Who's 'it'? It's you!" Where would you position yourself so that you are 'it' if there are two players? Three players ...?
How would you create the largest possible two-digit even number from the digit I've given you and one of your choice?
What happens when you add three numbers together? Will your answer be odd or even? How do you know?
An investigation looking at doing and undoing mathematical operations focusing on doubling, halving, adding and subtracting.
Are these statements relating to odd and even numbers always true, sometimes true or never true?
Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?
There were cola bottles for 2p, mini eggs for 3p, marshmallow twists for 5p and lollipops for 7p in the sweet shop. What could each of the children buy with their money?
Four bags contain a large number of 1s, 3s, 5s and 7s. Can you pick ten numbers from the bags so that their total is 37?