Additive thinking resources

Students demonstrate their understanding of place value by identifying numbers shown in a shape-based number system.

Different selections are made from a canteen menu that will cost a given amount. An extension activity is given that asks for all possible combinations to be found.

Students calculate the changes to an account balance after two withdrawals and a deposit.

Students use number lines to show how to solve whole number addition and subtraction problems.

Students answer questions involving adding and subtracting fractions of food.

Students work out how much time some bus trips take.

Students use addition and subtraction to calculate the changing balance in a students back account.

Students complete a timetable by adding on the time taken for each task.

Students conduct a practical, statistical investigation. They decide on a Topic and question, conduct the survey, complete the tally chart, construct a bar graph of the major ideas and make statements about the results.

Students find the sum of a number of given decimal weights of objects or the post.

Students solve subtraction maths problems and show their strategy for working it out.

Students solve addition maths problems and show their strategy for working it out.

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 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.

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

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

Students identify fractions that are greater than a half and explain their reasoning. They also identify how far from half some fractions are and name a fraction closer to half than one given.

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

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