This article, written by Dr. Triangular numbers can be represented by a triangular array of squares. Practice exercises with answers PDF or Word. In these activities, you can practise your skills with adding and taking away. Try adding fractions using A4 paper. Geoboards Age 5 to 11 This feature brings together activities which make use of a geoboard or pegboard.

Te Kete Ipurangi Navigation: Age 3 to 7 This article, written by Dr. You’ll find money, length and time here. How do you know they are halves? Which of these pocket money systems would you rather have?

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….

Use a range of multiplicative strategies when operating on whole numbers. This task offers opportunities to subtract fractions using A4 paper. Try adding fractions using A4 paper. aolving

Generalise properties of multiplication and division with whole numbers. Students who do not read this instruction could find they cannot do them, unless they assume that they have been doubled and halved. Start with 1 x n, and double and halve from there.

## 66 Matches for doubling halving

Addition and Subtraction Age 5 to 7 These lower primary tasks all involve addition, subtraction or both. 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 AO elaboration and other teaching resources Achievement Objective: Cutting Corners Age 7 to 11 Challenge Level: The activity asks students to solve problems, fill in missing numbers in equations using proportional adjustment and solve word problems.

Follow Up Age 14 to 16 Challenge Level: What happens when you split an object or a few objects into different piles? Paper Halving Age 5 to 11 Challenge Level: Fractions Age 5 to 7 Try these lower primary tasks if you want to improve your understanding of fractions. 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.

He’d like to put the same number of plants in each of his gardens, planting one garden each day. Dobuling of these pocket money systems would you rather have?

Different Sizes Age 5 to 11 Challenge Level: How can he do it? More Lower Primary Fractions Age 5 to 7.

# Primary Resources: Maths: Calculations: Doubling & Halving

Double Trouble Age 3 to 5 Doubling numbers. What do you notice about the sum of identical triangle numbers? Multiplication and Division Age 5 to 7 These lower primary tasks will help you to think about multiplication and division. Halving 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 dobling working backwards. The first of two articles on Pythagorean Triples which asks how many right angled triangles can you find with the lengths of each side exactly a whole number measurement.

Doubling and halving Keywords: How do you know they are halves? This article, written by Dr.

# Word problems with doubling and halving

Asks students to generalise the doubling and halving strategy by introducing algebraic notation. However, it does require some idea of prime numbers and how these operate. This priblem essential introductory algebra to build understanding of the language of mathematics. Investigate the different ways you could split up these rooms so that you have double the number. The number of ,s1 in Mr McGregor’s magic potting shed increases overnight.

Geoboards Age 5 to 7 This lower primary feature brings together activities which make use of geoboards.