Standards with the same topic and subject but for other grades
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.
Subtraction is the inverse of addition; it yields the difference between two numbers and uses the following terms: minuend --> 7,698 – subtrahend --> 5,341= difference --> 2,357.
Grade two students should begin to explore the properties of addition as strategies for solving addition and subtraction problems using a variety of representations.
find the difference, using various methods of calculation.
Create and solve single-step and multistep practical problems involving the sum or difference of two whole numbers, each 9,999 or less. (b)
Understand that subtraction is used in practical situations when exact answers are needed.
Develop flexible methods of subtracting whole numbers to find the difference, by combining numbers in a variety of ways, most depending on place values.
Find the difference of two whole numbers each 99 or less, using Base-10 models, such as Base-10 blocks and bundles of tens.
Solve problems presented vertically or horizontally that require finding the difference between two whole numbers each 99 or less, using paper and pencil.
Solve problems, using mental computation strategies, involving subtraction of two whole numbers each 99 or less.