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Connected Ed Unit 2
Vocabulary Study
Term | Definition |
---|---|
Associative Property of Addition | The property which states that the grouping of addends does not change the sum. EX: (2+5)+1=2+(5+1) |
Bar diagram | A bar diagram is used to illustrate number relationships |
Commutative Property of Addition | The property that states the order in which two numbers are added does not changed the sum. EX: 5+7=12, 7+5=12 |
estimate | A number close to an exact value. (rounding) |
Identity Property of Addition | The property that states if you add zero to a number, the sum is the same as the given number. EX: 0+3=3 |
mental math | Ordering or grouping numbers so they are easier to add in your head. (5+5=10) |
parentheses | symbols that are used to group numbers. They show how to group operations in a number sentence. |
pattern | A set of numbers that follows a certain order. 2,4,6,8,10 |
reasonable | Within the bounds of making sense. Not a wild guess. |
regroup | to use place value to exchanged equal amounts when renaming a number. (Addition/Subtraction, borrowing, carrying) |
unknown | A missing number, or the number to be solved for. 6+7=? ? is the unknown |