### NRICH PROBLEM SOLVING KS2

Can you sort out the clues and find the number? Cover the Tray Age 7 to 11 Challenge Level: Factor-multiple Chains Age 7 to 11 Challenge Level: Orange Drink Age 7 to 11 Challenge Level: Play this game and see if you can figure out the computer’s chosen number. Age 7 to 11 Visualising at KS2 These upper primary tasks all specifically draw on the use of visualising. Guess the Dominoes Age 7 to 14 Challenge Level:

In this article for teachers, Lynne explains why it should be. Can you discover its value in each problem? Think of a number, square it and subtract your starting number. The numbers 1 – 9 may be used once and once only. Lolla bought a balloon at the circus. Scroll down to see our complete collection of KS2 problems that require children to work systematically, or explore the two sub-collections focusing on important aspects of systematic working. Cycling Squares Age 7 to 11 Challenge Level:

Can you work out how long it is between each super-eclipse? Try with other numbers of cubes as well. Reach Age 7 to 14 Challenge Level: However, she always made 80 pies at a time.

My number is both a multiple of 5 and a multiple of 6. How many different shaped boxes can solvong design for 36 sweets in one layer?

## Problem-solving Skills

The tasks in this collection can be used to encourage children to convince others of their reasoning, using ‘because’ statements. Four of these clues are needed to find the chosen number on this grid and four are true but do nothing to help in finding the number.

Register for our mailing list. Do they all k2 the same volume? Can you get four in a row? Can you find any two-digit numbers that satisfy all of these statements?

In this article, Jennie suggests that we can support this process in three principal ways. These sixteen children are standing in four lines of four, one behind the other.

How many coins are there? 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. These upper primary tasks all specifically draw on the use is2 visualising.

# Problem-solving Skills :

Square Subtraction Age 7 to 11 Challenge Level: Scroll down to see our complete collection of KS2 problems that require children to work systematically, or explore the two sub-collections focusing on important aspects of systematic working. Is there only one solution in each case?

How do you know if your set of dominoes is complete? Subtraction Surprise Age 7 to 14 Challenge Level: Can you make square numbers by adding two prime numbers together?

# Working Systematically at KS2 :

Register for our mailing list. What numbers could be inside the envelopes? Can you discover its value in each problem? This cube has ink on each face which leaves marks on paper as it is rolled. How about when a friend begins a new rhythm at the same time?

## Ratio and Proportion KS2

All the Digits Age 7 to 11 Challenge Level: How much water is needed to make 10 litres of this drink? Mystery Matrix Age 7 to 11 Challenge Level: What questions would you like to ask?

How many times do they flash together during a whole minute? 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.

What do you notice?