Number Strategies resources

Students use doubling and halving to solve a number of multiplication problems.

Students use doubling and halving to solve multiplication problems.

This task requires students to estimate some addition problems using any appropriate method.

Students find fractions of numbers of different farm animals and put them in their simplest form.

Students convert heights of a building into the percentage of the given total height, explaining how they solved some conversions. Assessment focus is on how they calculate these heights and what strategies they use.

Students show how they solve equal sharing problems.

Students write down an explanation of how the front-end estimation strategy works in addition problems to give information on their understanding of the strategy.

In this task students decide which people are estimating and which are not, and explain their reasoning.

Students estimate an addition problem, share their methods, discuss the rounding method, and then do more problems using rounding.

Students perform decimal multiplication and division involving the cost of material, without the use of a calculator.

Students use estimation strategies to calculate the number of vegetables they can buy with given amounts of money.

Students display their knowledge of algorithms by filling in missing digits for some computations.

Students to show how to calculate problems that involve rates and ratios.

Students recommend which store offers the cheapest product based on calculations of percentage increase or decrease, and fully justify their answers.

Students identify fractions that are greater than a half, explain their reasoning, and identify how far from half some fractions are.

Students use rounding to estimate totals then discuss this as a method of estimation.

Task: calculate answer to questions about speed, distance, and time. Assessment focus: using a formula.

Students calculate percentage increases and decreases for odd jobs and show their working.

Students calculate the number of containers needed for given amounts of fruit for a recipe.

Students identify fractions that are greater than one, explain their reasoning and identify how far from one some fractions are.

Students find the number of groups of a given size using division, reverse multiplication, trial and improvement, or iterative equal sharing. Students must show their working.

Students work out fractional values of whole numbers in a range of contexts and show their working.

Students show how to divide given amounts into the number of groups of a given size.

Students show how they perform an addition and a subtraction problem, and write their own subtraction story problem.

Students explain why a range of students' answers to a maths problem are incorrect.