Addition and subtraction within 20 - Find and make number bonds - Worksheet

The worksheet 'Find and Make Number Bonds' is an educational resource aimed at enhancing fluency and precision in addition and subtraction within the number range of 20. It aligns with the National Curriculum objective to represent and use number bonds and related subtraction facts within this numerical limit. To support the learning process, differentiated sheets and teaching slides are provided as resources. The key vocabulary for this lesson includes terms such as 'addition', 'number bonds', 'place value', and 'strategy'. The exercises encourage children to systematically find all possible number bonds to 20, leveraging their existing knowledge of number bonds to 10. For example, if they know that 7 + 3 equals 10, they can then deduce that 17 + 3 equals 20, thus reinforcing their grasp of place value.

Students are prompted to answer key questions, such as how to find all number bonds, the relationship between number bonds to 10 and 20, and how the knowledge of one aids in understanding the other. The worksheet presents various tasks where children identify the number of red and yellow counters to establish the total count, thereby forming number bonds. For instance, if there are 4 red counters and 6 yellow counters, the total is 10 counters, which can be represented as 4 + 6 = 10 and extended to 14 + 6 = 20 to find the number bond to 20. The worksheet also incorporates reasoning and problem-solving sections where children use ten frames to represent calculations and explain their thinking, spotting any errors in representation, such as incorrectly identifying 20 as a part rather than a whole in a part-whole model.