Addition and subtraction problems should be presented in both horizontal and vertical written format.
Lessons for this standard
Resources cannot be aligned to this standard, browse sub-standards to find lessons.
Similar standards in other grades
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.
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.).
The associative property of multiplication states that the product stays the same when the grouping of factors is changed (e.g., 6 × (3 × 5) = (6 × 3) × 5).
The distributive property states that multiplying a sum by a number gives the same result as multiplying each addend by the number and then adding the products: 8 x 7 = 8 (5 + 2), (8 x 5) + (8 x 2), 40 + 16 all equal 56; 5 x 23 = 5 (20 + 3), (5 x 20) + (5 x 3), 100 + 15 all equal 115.
The associative property of addition states that the sum stays the same when the grouping of addends is changed (e.g., 15 + (35 + 16) = (15 + 35) + 16).