12 - 5 = 7 Just like with addition, we can use a part-whole model to help partition larger numbers to make them easier to deal with in subtraction problems.

The team tested this process by tossing the XOR ingredients into a test tube, along with those for two other gates, to produce the first few steps involved in binary addition and subtraction.

Let's explore addition and subtraction This collection contains curriculum-relevant videos, quizzes and games to help Year 6 and P7 Maths students with: mental addition strategies adding and ...