Addition and subtraction - Subtract a three-digit number from a three-digit number no exchange - Worksheet

This worksheet is designed to help Year 6 students master the skill of subtracting three-digit numbers from three-digit numbers without the need for exchanging. The National Curriculum objective covered in this lesson includes mental addition and subtraction of three-digit numbers with ones, tens, and hundreds, as well as using formal columnar addition and subtraction methods. Students are provided with differentiated sheets, teaching slides, number lines, and Base 10 equipment to support their learning.

The vocabulary for this lesson includes terms such as add, subtract, methods, counting on, number line, near subtraction, number bonds, formal column subtraction, and strategy. Students are encouraged to explore various efficient subtraction strategies, including counting on using number lines, near subtraction, and number bonds, before moving on to formal column subtraction. Key questions posed during the lesson help students think critically about the strategies they use and how to verify the correctness of their answers. Through a series of exercises, including completed examples, number line jumps, missing number calculations, and matching bar models to number lines, students practice and reinforce their subtraction skills. The worksheet also includes reasoning and problem-solving activities that challenge students to apply their knowledge in different scenarios, such as subtracting using digit cards and investigating the properties of the differences obtained.