# NRICH ADDITION PROBLEM SOLVING KS2

Three Dice Age 7 to 11 Challenge Level: He could then pay any sum of money from 1p to 15p without opening any bag. Dicey Addition Age 5 to 11 Challenge Level: A garrison of men has just enough bread Who had made the highest even number?

Play to 37 Age 7 to 11 Challenge Level: Balance of Halves Age 7 to 11 Challenge Level: Each child in Class 3 took four numbers out of the bag. These lower primary tasks all specifically draw on the use of visualising. What Do You Need?

## Multiplication and Division KS2

The picture shows a lighthouse and many underwater creatures. Think of a number, square it and subtract your starting number. Norrie sees two lights flash at the same time, then one of them flashes every 4th second, and the other flashes every 5th second.

Register for our mailing list. Can you go through this maze so that the numbers you pass add to exactly ? What happens when you addktion different numbers?

## Adding and Subtracting

How many pennies did Ram put in each bag? Abundant Numbers Age 7 to 11 Challenge Level: Four bags contain a large number of 1s, 3s, 5s and 7s.

CONCLUDING SENTENCE/CLINCHER (RESTATE THESIS IN NEW WORDS)

One block is needed to make an up-and-down staircase, with one step up and one step down. If we number the cubes from the top, starting with 1, can you picture which cubes are directly below this first cube?

Four strategy dice games to consolidate pupils’ understanding of rounding. Ribbon Squares Age 7 to 11 Challenge Level: Domino Square Age 7 to additipn Challenge Level: Three Neighbours Age 7 to 11 Challenge Level: What’s All the Talking About? She bought four times as many pens as pencils and was given 40p change. Pick any ten numbers from the bags above so that their total is What is the smallest number of coins needed to make up 12 dollars and 83 cents?

How Do You Do It?

Dicey Addition Age 5 to 11 Challenge Level: Every card he revealed had the same value as the one he had just finished spelling. He could then pay any sum of money from 1p to 15p without opening any bag.

# Addition and Subtraction KS2 :

Explore Alex’s proble plumber. These upper primary tasks could all be tackled using a trial and improvement approach. Ordered Ways of Working Upper Primary These activities lend themselves to systematic working in the sense that it helps to have an ordered approach.

XYLYS WATCHES CASE STUDY

If you would like a new CD you would probably go into a shop and buy one using coins or notes.

Subtraction Surprise Age 7 to 14 Challenge Level: Which route gives you the highest return? Finding All Possibilities Upper Primary These activities focus on finding all possible solutions so working in a systematic way will ensure none are left out. Prison Cells Age 7 to 11 Challenge Level: Roasting Old Chestnuts 4 Age 11 to 16 For teachers. Lots to find out, lots to explore. A Year of Investigations Age 5 to 14 This article for teachers suggests ideas for activities built around 10 and Journeys in Numberland Age 7 to 11 Challenge Level: They are each holding a card with a number on it.