## Standards with the same topic and subject but for other grades

Grade three students should explore and apply the properties of addition as strategies for solving addition and subtraction problems using a variety of representations (e.g., manipulatives, diagrams, symbols, etc.).

visualize the action in the story problem and draw a picture to show their thinking; and

One more than, one less than, two more than, two less than.

The identity property of addition states that if zero is added to a given number, the sum is the same as the given number.

The identity property of multiplication states that if a given number is multiplied by one, the product is the same as the given number.

Investigate the identity property for multiplication and determine that when the number one is multiplied by another number or another number is multiplied by the number one, that number remains unchanged. Examples of the identity property for multiplication are 1 x 3 = 3; 6 x 1 = 6.

The identity property of addition states that if zero is added to a given number, the sum is the same as the given number. The identity property of multiplication states that if a given number is multiplied by one, the product is the same as the given number.

The commutative property of addition states that changing the order of the addends does not affect the sum (e.g., 24 + 136 = 136 + 24). Similarly, the commutative property of multiplication states that changing the order of the factors does not affect the product (e.g., 12 × 43 = 43 × 12).

model the problem using manipulatives, representations, or number sentences/equations.