Grade 3 Mathematics

Whole Numbers

• Place value: the location of a digit in a number
• Value: the value of a digit based on its place value
• Addition: to join two or more groups (Example:  2 + 3 = 5)
• Addend: a number that is added to another in an addition problem (Example: in 2 + 3 = 5, 2 and 3 are addends)
• Sum: the answer to an addition problem (Example: in 2 + 3 = 5, 5 is the sum)
• Subtraction: to find the difference when two groups are compared or to find out how many are left when items are taken away from a group
• Difference: the answer to a subtraction problem (in 8 – 3 = 5, 5 is the difference)

Whole Number Activities 

• Locate numbers in catalogs or newspapers, then practice rounding them to the nearest tens and hundreds.
• Practice adding and subtracting three-digit numbers.

Whole Number Independent Practice

• Multi-Digit Addition and Subtraction Links to an external site.
• Rounding Whole Numbers Links to an external site.Rou