Two-digit Targets
Age 5 to 7 Challenge Level:
You have a set of the digits from 0 – 9. Can you arrange these in the five boxes to make two-digit numbers as close to the targets as possible?
Five Steps to 50
Age 5 to 7 Challenge Level:
Use five steps to count forwards or backwards in 1s or 10s to get to 50. What strategies did you use?
Heads and Feet
Age 5 to 7 Challenge Level:
On a farm there were some hens and sheep. Altogether there were 8 heads and 22 feet. How many hens were there?
Four Colours
Age 5 to 11 Challenge Level:
Kate has eight multilink cubes. She has two red ones, two yellow, two green and two blue. She wants to fit them together to make a cube so that each colour shows on each face just once.
Eggs in Baskets
Age 5 to 7 Challenge Level:
There are three baskets, a brown one, a red one and a pink one, holding a total of 10 eggs. Can you use the information given to find out how many eggs are in each basket?
Find the Difference
Age 5 to 7 Challenge Level:
Place the numbers 1 to 6 in the circles so that each number is the difference between the two numbers just below it.
4 Dom
Age 5 to 16 Challenge Level:
Use these four dominoes to make a square that has the same number of dots on each side.
The Brown Family
Age 5 to 7 Challenge Level:
Use the information about Sally and her brother to find out how many children there are in the Brown family.
The Tall Tower
Age 5 to 7 Challenge Level:
As you come down the ladders of the Tall Tower you collect useful spells. Which way should you go to collect the most spells?
NRICH is part of the family of activities in the Millennium Mathematics Project.