The topic “Arithmetic Tactics (2-3 Digits)” focuses on enhancing children’s mental math skills and understanding of addition and subtraction involving two- and three-digit numbers. By practicing mental math for addition and subtraction within 20, children will develop quick calculation techniques such as breaking apart numbers, compensation, and counting on, all while working within a time limit to improve their speed and accuracy. When adding and subtracting within 100, they will learn to utilize place value and regrouping strategies, fostering a deeper comprehension of operational properties while clearly showing their workings. Additionally, the topic covers mental strategies for adding 10 or 100 to multiples of 10 or 100, emphasizing the importance of place value adjustments in efficient calculations. Finally, children will apply these skills to add and subtract three-digit numbers within 1000, focusing on vertical calculations and methodical steps to ensure clarity in their processes. Overall, this topic aims to strengthen foundational arithmetic skills, boost confidence in calculations, and prepare students for more complex mathematical concepts in the future. Through these tactics, children will gain a solid grasp of number operations and improve their overall mathematical fluency.