Grade 2 - Numbers, Operations and Relationships
Standard 2.NOR.1.16.3a - Compare subtraction equations to find the related fact with numbers up to 1000.
Included Skills: Subtraction, Number Properties
Calculation strategies • Use calculation strategies to add and subtract efficiently: - Put the larger number first in order to count on or count back - Number line - Doubling and halving - Building up and breaking down - Use the relationship between addition and subtraction.