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Students explain multiplication estimation methods used to solve word problems.

Students work out the smallest and largest amounts of coins and notes in a piggy bank from statements about the number and type of money.

Students estimate the sum of a number of fractions.

Students add and subtract fractions to work out fractions of food.

Students show how to calculate maths problems involving fractions as a part and as a whole.

Students answer questions involving adding and subtracting fractions of cake.

Students solve addition story problems involving numbers of different magnitude to explore their place value understanding.

Students use percentages to calculate heights of a building from the total height. They then explain how to calculate another percentage.

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.

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.