## NRICH PROBLEM SOLVING NUMBER BONDS

No ‘jumping’ is allowed. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice. Try grouping the dominoes in the ways described. Four Go Age 7 to 11 Challenge Level: An investigation looking at doing and undoing mathematical operations focusing on doubling, halving, adding and subtracting. Bottles 2 Age 5 to 7 Challenge Level: Can you figure out what they were?

A game for 2 players. Move the same counter in any direction along a line segment to a neighbouring number and announce the total of the two numbers. Down to Nothing Age 7 to 11 Challenge Level: Or did they have a more systematic approach to the problem? What rule might he have chosen? Abundant Numbers Age 7 to 11 Challenge Level: How rich are they?

Choose a symbol to put bonfs the number sentence. Try grouping the dominoes in the ways described. Later we want them to use a symbol as a place holder for an unknown quantity where the answer is not immediately obvious and we have to do some work to find a solution.

Funny Factorisation Age 11 to 14 Challenge Level: Can you find a pair of numbers that has four odds between them? Learners’ suggestions might include, for example, working top down, or bottom up, or hexagon out, matching colours, making pairs first, noticing the three 5s and therefore reasoning that sloving of these will have to be on an outer edge A game for 2 or more people.

In this activity focusing on capacity, you will need a collection of different jars and bottles. In this calculation, the box represents a missing digit. Largest Even Age 5 to 7 Challenge Level: Connect Three Age 11 to 16 Challenge Level: If these are printed onto thin card and laminated you will have a permanent set that can be used for other purposes as well. Register for our mailing list. In this investigation we are going to count the number of 1s, 2s, 3s etc in numbers. Can they predict what will happen if they start the rhyme in different places and what patterns do they notice?

# Pairs of Numbers :

Are these domino games fair? Can you make ?

In this problem it is not the squares that jump, you do the jumping! You’ll need two dice to play this game against a partner. No ‘jumping’ is allowed. Can you work out the domino pieces which would go in the middle in each case to complete the pattern of these eight bondd of 3 dominoes?

How Odd Age 5 to sloving Challenge Level: Using 2 dice, some counters and a games board, can you form a line of counters from one side of the board to the other? Lots of Lollies Age 5 to 7 Nriich Level: He lined them up and put icing on every second biscuit and different decorations on other biscuits. Problem You may also like Traffic Lights The game uses a 3×3 square board.

Money Bags Age 5 to 11 Challenge Level: Practise your number bonds whilst improving your memory. Can you find 2 butterflies to go on each flower so that the bonde on each pair of butterflies adds to the same number as the one on the flower? Roman Numerals Age 7 to 11 Challenge Level: Welcome all contributions, even if they don’t seem relevant to the mathematics – children will need to get all sorts of observations ‘off their chests’!

## Making Algebra Rich

In this investigation we are going to count the number of 1s, 2s, 3s etc in numbers. Count the Digits Age 5 to 11 Challenge Level: Remove Filters Filter by resource type problems games articles general resources interactive environments projects Lists.

Are You Well Balanced?