Standards with the same topic and subject but for other grades
Automaticity of facts can be achieved through meaningful practice which may include games, hands-on activities, dot cards, and ten frames.
Using concrete materials (e.g., base-10 blocks, connecting cubes, beans and cups, etc.) to explore, model and stimulate discussion about a variety of problem situations helps students understand regrouping and enables them to move from the concrete to the abstract. Regrouping is used in addition and subtraction algorithms.
Grade two students should begin to explore the properties of addition as strategies for solving addition and subtraction problems using a variety of representations.
Apply strategies, including place value and the properties of addition to determine the sum or difference of two whole numbers, each 999,999 or less. (b)
Demonstrate fluency with addition and subtraction within 10. (b)
model the problem using manipulatives, representations, or number sentences/equations.
The least number of steps necessary to solve a single-step problem is one.
Mathematically fluent students are not only able to provide correct answers quickly but also to use facts and computation strategies they know to efficiently determine answers that they do not know.
Determine the sum of two whole numbers whose sum is 99 or less, using various methods. (b)
Recall and write the basic addition facts for sums to 18 or less and the corresponding subtraction facts, when addition or subtraction problems are presented in either horizontal or vertical written format.