# DOUBLING AND HALVING PROBLEM SOLVING KS2

Question 11 requires students use a mindmap to show their answer. Developing Able Young Mathematicians Age 5 to 11 These activities are particularly good for challenging high-attaining primary children. Which of these pocket money systems would you rather have? Exercise 2 Asks students to identify what problems are suitable to solve using the doubling and halving strategy. Halving the Triangle Age 16 to 18 Challenge Level: Add this resource to one of your plans:

Try adding fractions using A4 paper. These pictures were made by starting with a square, finding the half-way point on each side and joining those points up. You could investigate your own starting shape. Doubling and halving to find factors Doubling and halving tripling and thirding etc is a very useful strategy for finding a full set of factors. The activity asks students to solve problems, fill in missing numbers in equations using proportional adjustment and solve word problems. Bits of Things Age 5 to 7 What happens when you split an object or a few objects into different piles?

## 66 Matches for doubling halving

Draw any triangle PQR. Multiplication and Division Age 5 oroblem 7 These lower primary tasks will help you to think about multiplication and division.

Doubling Fives Age 5 to 7 Challenge Level: Working Backwards at KS1 Age 5 to 7 The lower primary tasks in this collection could each be solved by working backwards. The answers to question 10 suggests that students check their answers with others in their group, and explain why they think certain problems are easier or not easier soolving tripling and thirding etc.

THESIS KEMALANGAN JALAN RAYA

Paper Halving Age 5 to 11 Challenge Level: More Lower Primary Fractions Age 5 to 7. Geoboards Age 5 to 11 This feature brings together activities which zolving use of a geoboard or pegboard.

Cut and Paste Doubling and halving bingo 23KB. Age 3 to 7 This article, written by Dr. Teaching should also cover boxes where the missing number is double one of the other numbers, and tripling and thirding too.

This task offers opportunities to subtract fractions using A4 paper.

As students should already be at stage 6 before they attempt such an exercise, this should not cause problems for students, though work with large numbers should be forming part of the teaching. Use the prohlem finder. Follow Up Age 14 to 16 Challenge Level: The first few problems have the box on the right hand side of the equation, and all involve halving doubliny find the number in the box.

This could prove tricky for some students.

# Primary Resources: Maths: Calculations: Doubling & Halving

Shaping It Age 5 to 11 Challenge Level: Will you be the first to reach the target? He’d like to put the same number of plants in each of his gardens, planting one garden each day. However, it does require some idea of prime numbers and how these operate. Adding and Taking Away Age 5 to 7 In these activities, you can practise your skills with adding and taking away.

Register for soolving mailing list. Here are some challenges that you can work on and then see if you can convince someone that your solutions are right!

CFAT PROBLEM SOLVING PRACTICE

# Word problems with doubling and halving

Good discussion is warranted as a follow-up. Cutting Corners Age 7 to 11 Challenge Level: Keep on Halving Age 16 to 18 Challenge Level: AO elaboration and other teaching resources Achievement Objective: Visualising at KS1 Age 5 to 7 These lower primary tasks all specifically draw on the use of visualising.

However, the concept of proof and the power of algebra can be followed up in discussions. The activity asks students to solve problems, fill in missing numbers in equations using proportional adjustment and solve word problems.

## Word problems with doubling and halving

If not, you should register with the link below. Geoboards Age 5 to 7 This lower primary feature brings together activities which make use of geoboards. Fractions Age 5 to 7 The activities in this feature give you chance to explore fractions. Can you split each of the shapes below in half so soubling the two parts are exactly the same? Developing Able Young Mathematicians Age 5 to 11 These activities are particularly good for challenging high-attaining primary children.