## PROBLEM SOLVING KS2 NRICH

What numbers could be inside the envelopes? How about the shaded numbers in the other squares? Can you use the information to find out which cards I have used? The tasks in this collection encourage children to create, recognise, extend and explain number patterns. Can you make square numbers by adding two prime numbers together?

Half Time Age 5 to 11 Challenge Level: Through the Window Age 7 to 11 Challenge Level: She gave the clown six coins to pay for it. In this activity, the computer chooses a times table and shifts it. Mystery Matrix Age 7 to 11 Challenge Level: This feature draws together tasks which give learners opportunities to reason for different purposes.

Can you discover its value in each problem? What do you notice? Odd Squares Age 7 to 11 Challenge Level: All the Digits Age 7 to 11 Challenge Level: There are nasty versions of this dice game but we’ll start with the nice ones Register for our mailing list.

What do you think is happening to the numbers? These activities lend themselves solvign systematic working in the sense that it helps to have an ordered approach. If you know the numbers that come out, what multiplication might be going on in the box? What happens if you join every second point on this circle? Can you use the information to find out which cards I have used?

Age 7 to 11 Working Backwards at KS2 The upper primary tasks in this collection could each be solved by working backwards. What happens when you enter different numbers?

## Problem-solving Skills

Is it the same number for a 12 hour clock over a whole day? Can you go through this maze so that the numbers you pass add to exactly ?

In how many different ways can you do it? Age 7 to 11 Visualising at KS2 These upper primary tasks all specifically draw on nrichh use of visualising.

# Problem Solving :

Pick any ten numbers from the bags above so that their total is Can you get four in a row? Addition and Subtraction KS2. A magician took a suit of thirteen cards and held them in his hand face down.

Age 5 to 7 Trial and Improvement at KS1 These lower primary tasks could all be tackled using a trial and improvement approach. How many squares did each one have inside it before it was ripped?

## Multiplication and Division KS2

Can you make a cycle of pairs that add to make a square number using all the numbers in the box below, once and once only? Age 5 to 7 Reasoning kz2 Convincing at KS1 The tasks in this collection can be used to encourage children to convince others of their reasoning, using ‘because’ statements.

Jennie outlines different ways in which learners might get started on a task stage 1dolving it is once they have got going and are working on the problem stage 2 that children will be making use of their problem-solving skills.

Mrs Morgan, the class’s teacher, pinned numbers onto the backs of three children.

# Factors and Multiples KS2 :

Here are some useful problem-solving skills:. Can you find all the ways to get 15 at the top of this triangle of numbers? Play this game and see if you can figure out the computer’s chosen number.

How many times do they flash together during a whole minute? This group activity will encourage you to share calculation strategies and to think about which strategy might be the most efficient. Got It Age 7 to 14 Challenge Level: This problem looks at the patterns on differently sized square grids. Tasks for KS1 children which nrifh on working systematically.