![100 Square Jigsaw](/sites/default/files/styles/medium/public/thumbnails/content-id-5572-icon.png?itok=ISTw0b-4)
![Tug of War](/sites/default/files/styles/medium/public/thumbnails/content-id-5897-icon.png?itok=SxCoP75T)
problem
Tug of War
Can you use the numbers on the dice to reach your end of the number line before your partner beats you?
![Two-digit targets](/sites/default/files/styles/medium/public/thumbnails/content-id-6343-icon.png?itok=darGk5sS)
problem
Two-digit targets
You have a set of the digits from 0 to 9. Can you arrange these in the five boxes to make two-digit numbers as close to the targets as possible?
![Strike it Out](/sites/default/files/styles/medium/public/thumbnails/content-id-6589-icon.gif?itok=PtQ_v8tW)
problem
Strike it Out
Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.
![Ip Dip](/sites/default/files/styles/medium/public/thumbnails/content-id-7185-icon.gif?itok=t93ltWdE)
problem
Ip Dip
"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 ...?
![Sitting round the party tables](/sites/default/files/styles/medium/public/thumbnails/content-id-7228-icon.gif?itok=z3fzVHd3)
problem
Sitting round the party tables
Sweets are given out to party-goers in a particular way. Investigate the total number of sweets received by people sitting in different positions.
![Sticky Data](/sites/default/files/styles/medium/public/thumbnails/content-id-7687-icon.jpg?itok=N-uIyXGU)
problem
Sticky Data
You'll need to work in a group on this problem. Use your sticky notes to show the answer to questions such as 'how many girls are there in your group?'.
![Five Steps to 50](/sites/default/files/styles/medium/public/thumbnails/content-id-10586-icon.jpg?itok=bm_mSNot)
problem
Five Steps to 50
Use five steps to count forwards or backwards in 1s or 10s to get to 50. What strategies did you use?
![Dicey Addition](/sites/default/files/styles/medium/public/thumbnails/content-id-11863-icon.png?itok=JxXPSevO)
![Digit Addition](/sites/default/files/styles/medium/public/thumbnails/content-id-14312-icon.png?itok=5rMz7AQJ)
problem
Digit Addition
Try out this number trick. What happens with different starting numbers? What do you notice?
![Arranging Additions and Sorting Subtractions](/sites/default/files/styles/medium/public/thumbnails/content-id-14726-icon.png?itok=JpyCE6wp)
problem
Arranging Additions and Sorting Subtractions
Order these four calculations from easiest to hardest. How did you decide?
![Subtraction Slip](/sites/default/files/styles/medium/public/thumbnails/content-id-14740-icon.jpg?itok=M2VCKxJ5)
problem
Subtraction Slip
Can you spot the mistake in this video? How would you work out the answer to this calculation?
![I'm Eight](/sites/default/files/styles/medium/public/thumbnails/content-98-11-bbprob2-icon.png?itok=y1X7RsxW)
![Let's Investigate Triangles](/sites/default/files/styles/medium/public/thumbnails/content-01-09-bbprob2-icon.gif?itok=t7U4-AYC)
problem
Let's Investigate Triangles
Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?
![Next Domino](/sites/default/files/styles/medium/public/thumbnails/content-00-03-letme1-icon.png?itok=gx2ASzuK)
![Buzzy Bee](/sites/default/files/styles/medium/public/thumbnails/content-01-05-letme1-icon.gif?itok=KK3DrBdd)
problem
Buzzy Bee
Buzzy Bee was building a honeycomb. She decorated the honeycomb with a pattern using numbers. Can you discover Buzzy's pattern and fill in the empty cells for her?
![Domino Sequences](/sites/default/files/styles/medium/public/thumbnails/content-03-03-letme1-icon.gif?itok=6U1wpha0)
![What's in a Name?](/sites/default/files/styles/medium/public/thumbnails/content-99-11-penta1-icon.gif?itok=81VflGfg)
problem
What's in a Name?
What do you notice about these squares of numbers? What is the same? What is different?
![Hundred Square](/sites/default/files/styles/medium/public/thumbnails/content-id-2397-icon.gif?itok=CU5wPqS3)
problem
Hundred Square
A hundred square has been printed on both sides of a piece of paper. What is on the back of 100? 58? 23? 19?
![Caterpillars](/sites/default/files/styles/medium/public/thumbnails/content-id-5742-icon.png?itok=oNkTmRK-)
problem
Caterpillars
These caterpillars have 16 parts. What different shapes do they make if each part lies in the small squares of a 4 by 4 square?
![Missing Middles](/sites/default/files/styles/medium/public/thumbnails/content-02-07-letme1-icon.png?itok=xLVaq-tY)
problem
Missing Middles
Can you work out the domino pieces which would go in the middle in each case to complete the pattern of these eight sets of three dominoes?
![Birthday Cakes](/sites/default/files/styles/medium/public/thumbnails/content-03-05-letme2-icon.gif?itok=9UlNs-ri)
problem
Birthday Cakes
Jack's mum bought some candles to use on his birthday cakes and when his sister was born, she used them on her cakes too. Can you use the information to find out when Kate was born?
![Heads and Feet](/sites/default/files/styles/medium/public/thumbnails/content-99-01-penta1-icon.png?itok=tPFJJE81)
problem
Heads and Feet
On a farm there were some hens and sheep. Altogether there were 8 heads and 22 feet. How many hens were there?
![Eggs in Baskets](/sites/default/files/styles/medium/public/thumbnails/content-04-01-letme1-icon.png?itok=N_F9S1kr)
problem
Eggs in Baskets
There are three baskets, a brown one, a red one and a pink one, holding a total of 10 eggs. How many eggs are in each basket?
![The Brown Family](/sites/default/files/styles/medium/public/thumbnails/content-04-01-letme2-icon.gif?itok=b8wkorok)
problem
The Brown Family
Use the information about Sally and her brother to find out how many children there are in the Brown family.
![Number Round Up](/sites/default/files/styles/medium/public/thumbnails/content-01-02-letme1-icon.gif?itok=RuNi0sz4)
problem
Number Round Up
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.
![Which symbol?](/sites/default/files/styles/medium/public/thumbnails/content-id-6777-icon.png?itok=RZG-oytk)