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Chapter 3 Math Vocab

3rd grade ch. 3 properties of subtraction

A way to express a math idea using numbers and operational symbols Number Sentence
A number close to an exact value Estimate
The answer in a subtraction problem Difference
To take apart a number to write it in a new way Regroup
Uses the front digit of a number and replaaces the other digits with zeros Front-end Estimation
An operation that tells the difference, when some or all are taken away. Subtraction
When you are completing a subtraction problem, the answer is known as the ________________. Difference
15 ones = 1 ten 5 ones. This is the correct way to __________. Regroup
427-106 is about 300. This is an example of ____________. Estimation
Created by: Mrs. Hise