Subtract a single digit number from a 2-digit number using number facts

The ArithmeKit 212 from Buzzard Publishing, part of the CanDoMaths series, provides a comprehensive set of exercises aimed at improving students' ability to subtract a single-digit number from a two-digit number using number facts. The kit includes a variety of activities such as 'Find the matching pairs', where students must match a subtraction problem with its correct answer, and 'What's missing?', which challenges them to identify the missing number in a given equation. For example, students might see '25 – 8 =' and need to calculate that the answer is 17. This method reinforces mental arithmetic skills and the understanding of number relationships.

Another engaging activity encourages students to create their own subtraction problems, fostering creativity and application of the concept. The exercises also prompt students to notice patterns, such as what happens when they subtract the same single-digit number from a series of two-digit numbers. For instance, subtracting 8 from numbers like 24, 54, and 74, and observing the results. The kit addresses common misconceptions, such as the incorrect belief that subtracting a smaller number from a larger one always results in bridging through a multiple of ten. Through the use of bar models and place value equipment, students can visually grasp why certain subtraction statements are incorrect, like the misunderstanding that '36 – 8 = 32'. The ArithmeKit 212 is a valuable resource for developing strong foundational skills in subtraction within the primary maths curriculum.