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# Unit 3 Math

### Math Vocabulary Unit 3

TermDefinition
Addition To put together, combine, join (+)
Compare To find if two or more numbers are greater than, less than, or equal to each other
Difference The answer to a subtraction problem
Equal Worth the same value
Estimate To use what you know or see to make a reasonable guess
Even number A number where you can make equal groups and have none left over; has a 0, 2, 4, 6, or 8 in the ones place
Greater than When a number has a bigger value, than another number (Example: 4<9)
Less than When a number has a smaller value than another number (Example: 5>3)
Odd number A number where you can make equal groups with one left over; has a 1, 3, 5, 7, or 9 in the ones place
Place value The value of a digit based on its place in a number (ones place, tens place, etc.)
Related fact Use the same 3 numbers to make two addition and two subtraction equations
Round To find which landmark number is closer
Skip Count Using patterns to count (Example counting by 2's- 2, 4, 6, 8, 10, 12 etc.)
Sum The answer to an addition problem
Subtraction To take away from a whole, to compare numbers (-)
Tens A group of ten units/items; in a number shows how many groups of ten there are ( In 52, there are 5 groups of tens)
Value How much Something is worth
Created by: WilliaKM2