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Students solve and write simple linear equations about the number of balls in a cylinder.

Students use number lines to show their understanding of commutativity.

Students find and write the numbers to complete equations that add to 10 or 20.

Students explore the additive identity by completing open number sentences.

Students explore the additive identity by deciding whether addition and subtraction number sentences are true or false.

Students explore the additive identity by deciding whether addition and subtraction number sentences are true or false.

Students explore the additive identity by completing open number sentences.

Students solve and write appropriate equations for story problems.

Students use addition and subtraction to solve story problems.

Students solve mathematical problems about days off school and identify another linear equation that represents the situation.

Students write and solve linear equations for story problems related to a school dance.

Students estimate an addition problem, share their methods, discuss grouping nice numbers, and then do a problem using this method, then design a question showing how it uses the method.

Students use fractions as operators to find unit fractions of a given whole number.

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

Students calculate addition and subtraction problems, written in decimal form, for city populations.

This task is about using rates in ml/minute to work out how much water has dripped from four taps.

Students answer questions that involve subtracting numbers.

Students work out how many cups of juice can be made or how many runs can be scored from given rates.

Students complete equations by subtracting given numbers on a subtraction wheel.

Students complete a number of equations adding to 36 on an addition wheel.

Students work out how many doses in a larger measure of medicine.

Students identify the coins that make up specified amounts of money.

This task is about working out change for a variety of purchases.

Students calculate how many adults got into a concert for free using information about the number of concert-goers and the ratio of free adults to children.

Students use all addition and subtraction operations to perform calculations.