Keep on Halving Age 16 to 18 Challenge Level: Add this resource to one of your plans: Will you be the first to reach the target? 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. AO elaboration and other teaching resources Achievement Objective: In how many ways can you halve a piece of A4 paper?

This is essential introductory algebra to build understanding of the language of mathematics. Doubling and halving, and trebling and thirding can be used to make multiplication problems easier to solve. Number Stage 2 Age 5 to 7 Challenge Level: Difficulties with Division Age 5 to 11 This article for teachers looks at how teachers can use problems from the NRICH site to help them teach division. Fractions Age 7 to 11 Explore the idea of fractions using these activities.

Doubling and halving Keywords: Number Stage 2 Age 5 to 7 Challenge Level: Prlblem students to generalise the doubling and halving strategy by introducing algebraic notation.

# Word problems with doubling and halving

Multiplication and Division Age 5 to 7 These lower primary tasks will help you to think about multiplication and division. Different Sizes Age 5 to 11 Challenge Level: Fractions Age 7 to 11 Explore the idea of fractions using these activities. Room Doubling Age 7 to 11 Challenge Level: This article for teachers looks at how teachers can use problems from the NRICH site to help them teach division.

Addition and Subtraction KS1 Age 5 to 7 The lower primary tasks in this collection all focus doublng adding and subtracting.

Age 5 to 7 Challenge Level: Multiplying and Dividing Age 5 to 7 Try these problems, which are all about multiplying and dividing different numbers.

Filter by resource type problems game articles general resources EYFS Resources Lists Filter by age 5 to 7 7 to 11 11 to 14 14 to 16 16 to Exercise 2 Asks students to identify what problems are suitable to solve using the doubling and halving strategy.

Fractions Age 5 to 7 Try these lower primary tasks if you want to improve your understanding of fractions. Asks students to solve word problems. Solvibg this resource to one of your plans: Use a range of multiplicative strategies when operating on whole numbers. Shaping It Solbing 5 to 11 Challenge Level: This task offers opportunities to subtract fractions using A4 paper.

The activity asks students to solve problems, fill in missing numbers in equations using proportional adjustment and solve word problems. Asks students to solve problems using doubling and halving.

## Doubling and halving

Visualising at KS1 Age 5 to 7 These lower primary tasks all specifically draw on the use of visualising. A TKI account lets you personalise doublimg experience – enabling you to save custom homepage layouts, create kete, and save bookmarks and searches.

Sovling Halving Age 5 to 11 Challenge Level: These pictures show squares split into halves. However, it does require some idea of prime numbers and how these operate.

## Word problems with doubling and halving

The first few problems have the box on the right hand solcing of the equation, and all involve halving to find the number in the box. Doubling and halving, and trebling and thirding can be used to make multiplication problems easier to solve.

What happens when you split an object or a few objects into different piles? Halving Age 5 to 7 Challenge Level: Try these activities to problme out! Adding and Taking Away Age 5 to 7 In these activities, you can practise your skills with adding and taking away. Register for our mailing list. You could investigate your own starting shape. Pocket Money Age 11 to 14 Challenge Level: For question 10 students should identify that doubling and halving is a useful strategy when both numbers are even — to start with, but this question deserves more discussion, as simply doubling and halving may not necessarily produce a question that is easier to do….

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.