Addition and subtraction within 20 - Subtraction not crossing 10 counting back - Worksheet

The worksheet focuses on the concept of subtraction without crossing the number 10, specifically targeting the skill of counting back within the range of 20. It is designed to help children understand subtraction by using a number line and number pieces. The worksheet presents children with a starting point on the number line along with a subtraction calculation. They are then tasked with counting back to find the answer. This method reinforces the understanding of subtraction as a process of counting backwards, and the use of number lines and physical number pieces aids in visualizing the concept.

Further exercises on the worksheet involve different levels of guidance for the children. Some tasks provide the subtraction calculation and require the children to use the number line to find the answer, while others present number pieces with mixed-up covered numbers for the children to decipher the calculation before solving it. The worksheet is designed to encourage fluency and precision in basic subtraction facts by offering clear, step-by-step tasks that build confidence in young learners. Answers to the subtraction problems, such as 20 – 3 = 17 and 15 – 4 = 11, are included to enable self-assessment and provide immediate feedback to the students.