Addition and subtraction - Add two-digit and one-digit numbers 2 - Worksheet

In this worksheet from Master the Curriculum, students are tasked with adding two-digit and one-digit numbers, specifically focusing on cases where the sum crosses over a ten. The National Curriculum objective is for children to be able to add a two-digit number and ones while crossing ten. To achieve this, they need a firm grasp of place value, understanding that ten ones are equivalent to one ten and being able to partition two-digit numbers. This foundational knowledge is crucial for them to line up numbers in columns correctly and to use number lines and number bonds effectively for addition.

The worksheet provides differentiated sheets, teaching slides, and Base 10 resources to facilitate learning. Key vocabulary includes addition, crossing tens, and place value. Students will use Base 10 blocks to partition numbers and exchange ten ones for a ten when necessary. They are encouraged to visually represent the addition process by drawing Base 10 blocks. Depending on their proficiency level, they may use a completed number line or find number bonds on their own. The worksheet also includes reasoning and problem-solving sections where students can apply their knowledge to various scenarios, such as determining whether adding ones to a two-digit number will change only the ones digit or both the ones and tens digits.