Addition and subtraction - Subtract one from two-digit numbers 2 - Worksheet

The worksheet in question is designed to enhance the mathematical fluency and precision of students, specifically targeting the skill of subtracting a one-digit number from a two-digit number, with an emphasis on crossing the tens boundary. This particular lesson is aligned with the National Curriculum objective which focuses on reinforcing the concept of subtraction that spans across the tens place value. Students are provided with differentiated worksheets and teaching slides to aid their understanding. Key vocabulary for this lesson includes subtraction, crossing tens, and place value. It's crucial for students to have a solid grasp of place value as they learn to subtract by counting up to 20 and partitioning two-digit numbers.

During the lesson, students are expected to tackle various tasks that test their ability to subtract using a number line, understand the difference between one-digit and two-digit numbers, and correctly align them in columns for calculation. They are also encouraged to make use of number bonds to aid in their subtraction, thereby enhancing efficiency. Key questions posed to the students include whether they are counting forwards or backwards on the number line, if they have enough ones to subtract, and whether they can exchange a ten for ten ones. The worksheet also prompts students to consider different ways to represent the subtraction process, such as crossing out cubes to visually demonstrate the takeaway. This hands-on approach, coupled with reasoning and problem-solving exercises, supports students in developing a deeper understanding of subtraction and prepares them for more advanced mathematical concepts.