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Bridging through 10 is a mental math technique that breaks down addition or subtraction into 3 simple steps to get to the final answer. Students apply and/or strengthen their knowledge of number bonds to 10 and therefore extend their skills at mental addition and subtraction with numbers up to 100.

In Year 2, the curriculum expects pupils to add and subtract numbers within 100, including using mental strategies such as bridging through 10. Pupils are taught to “add two numbers which bridge the tens boundary by using a ‘make ten’ strategy” and to “subtract across the tens boundary by subtracting through ten or from ten”