Addition and Subtraction Resources

Balance the scales by adding, moving or removing a weight. A great mental starter to develop addition and subtraction skills.

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Count on from the smaller number to the larger. As numbers are added to the balance scale they are also shown on the number line. Children should be encouraged to use their knowledge of number bonds to develop efficient mental methods.

Levels include counting up to 10, 20, 50 or 100, finding the difference between 2-digit numbers and decimals.

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Find the difference between two numbers by counting on from the smaller number to the larger number. Children must add the fewest numbers possible, so are encouraged to develop more efficient mental methods. The addition is also shown as jumps on a number line.

Levels include counting up to 10, 20, 50 or 100, finding the difference between 2-digit numbers, 3-digit numbers and decimals.

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Add weights to either pan until they are balanced. Can be used to teach addition, subtraction, partitioning, and mass, as well as developing an understanding of the equals sign.

Choose from grams, whole kilograms or kilograms with either 1 or 2 decimal places.

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Find the correct number in a sequence. Lots of choice over level, count forwards or back, count in whole numbers, multiples of 10, multiples of 100, decimals and fractions. 

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Score as many points as you can before the time runs out. A number of levels including addition, subtraction, multiplication, division and matching fractions and decimals.

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Place the answer to calculations on a number line. An enormous array of choice. Addition, subtraction, multiplication and division. Ranging from adding numbers to 10 to multiplying 4 digit numbers. Great for combining teaching calculations and approximations with developing an understanding of place value.

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Find pairs of numbers with a given total. Play against the clock. 

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Working towards an efficent method of column subtraction. Can be used to demonstate expanded subtraction (in which the numbers are partitioned) with or without the need for  borrowing.

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Practice jumping from the smaller number to the larger number on a number line. Lots of choice of level, including; jumping from a 2-digit number to 100, from a 2-digit number to a 3-digit number and between 3-digit numbers. Great for developing mental methods of calculation.

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An incredibly versatile teaching tool. You can change the start number and change the step size, then try and find the hidden number. Choose from several difficulty levels. Ask the children to discuss  the different methods they could use to find the missing number.

Can be used to explore sequences (including negative numbers and decimals),  multiplication tables, as well as reasoning about numbers.

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Find the missing digit in a calculation. Choose addition, subtraction, multiplication or division. Lots of control over level inculding decimals.

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Order the calulations from those with the least value to the greatest. Lots of levels, including; addition pairs to 20, addition pairs to 100, addition and subtraction of multiples of 10, and multiplication of numbers up to 10.

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A great way to practice number bonds / complementary numbers. Play against the clock and see who can complete the sums quickest. Choose number pairs that equal 10, 20, 50 or 100, or decimals pairs that equal 1.

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Find how long a journey took by jumping on a timeline.

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Match the pairs of cards with the same value. A great game to play as a mental starter. Over 50 levels to play including; addition, subtraction, multiplication, division, matching fractions and decimals and converting between measurements.

Add the partitioned numbers beginning with the largest. Choice of 2-digit, 3-digit or 4-digit numbers. An important conceptual step before a more formal method of column addition.

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The next step towards an efficient formal method of column addition. Add the numbers starting with the least significant, then combine the partitioned result. Choice of 2-digit, 3-digit or 4-digit.

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Read and interpret a word problem involving addition or subtraction and then solve.

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Read and interpret a word problem. Calulate the cost of 2 items and then find change from a given amount.

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Recombine numbers which have been partitioned. Choice of whole numbers and decimals. 

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Answer questions about the temperature around the world. Includes levels involving comparing temperatures, and comparing poistive and negative temperatures.

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Provides a visual representation of addition / subtraction pairs.

This resources is freely available to download from the archived Primary Framework site.

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Understand subtraction as the difference between two numbers.

This resources is freely available to download from the archived Primary Framework site.

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Count on and back using a beadstring.

This resources is freely available to download from the archived Primary Framework site.

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Can be used to explore addition and subtraction, multiples and number patterns.

This resources is freely available to download from the archived Primary Framework site.

For more addition and subtraction resources click here.

One or two-step function machine. Choose an input and explore how it is transformed by one or two number functions.

This resources is freely available to download from the archived Primary Framework site.