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Math Vocabulary Study Guide Name: ___________ Test Date: 1. 2. 3. 4. 5. 6. 7. 8. digits- all numbers are composed from the (1,2,3,4,5,6,7,8,9) place value-the value of digit depending on its place value in number compose-putting numbers together decompose-taking numbers apart greatest-the biggest number least-the smallest number compare-find out which number is greatest and which is less period-group of 3 digits in a number, starting from the right; a comma is use to separate the periods 9. addends- numbers added together in an addition equation 10. sum- the answer to an addition equation 11. missing addend-the addend missing from an addition equation 12. number pattern-an ordered set of numbers objects which helps predict (guess) what come next ex. 2, 4, 6, 8... 13. Commutative (Order) Property of Addition- add numbers in any order and the answer will be the same 14. Identity (Zero) Property of Addition- the sum of zero and any number is that same number 15. Associative (Grouping) Property of Addition-group addends in any way and the sum will be the same 16. Fact family-a group of related facts using the same numbers 17. Difference-the answer when subtracting two numbers 18. Round-replace a number with a number that tells how many 19. Estimate-find out about how much 20. Compatible Numbers-numbers that are close to the addends, but easy to add mentally 21- Equation-a number sentence that uses an equal (-) to show that the value to its left is the same as the value to the right 22. Odd-a number that cannot be evenly grouped 23. Even-a number that can be evenly grouped 24. Number sentence-an equation; can be addition, subtraction, multiplication, or division *The vocabulary test will be open book. Students may use their daily journal to complete the test. Students MAY NOT use this study guide. Vocabulary words are written daily in journals. They must complete each day's assignment so that they will have the information they will need to complete their vocabulary test.