This Mental Math: Subtract Tens - Homework 12.1 Worksheet is suitable for 1st - 3rd Grade. Now that your class can add by 10s they can start subtracting by 10s. This clear, learner-friendly learning exercise provides a good example (10-rods are pictured) and 7 problems to solve.
Help with Opening PDF Files. Lesson 8.1 Lesson 8.2 Lesson 8.3 Lesson 8.4 Lesson 8.5 Lesson 8.6 Lesson 8.7 Lesson 8.8.