Vocabulary
What is the answer to an addition problem called?
The Sum
Find the sum: 718+865
1,583
936-218= ____
718
1,902-1,374= ___
528
The difference
Find the sum: 909+624
1,533
826-184=____
642
84,010-3,992= __
80,018
Which property states that the sum of any number and zero is that number?
Identity property of addition
Add: 14,312 +9,617
4,695
281,311-3,427= ___
277,884
726,003-282,942= __
443,061
Which property states that a number can be added in any order and the sum stays the same?
The commutative property of addition
Add: 29,634 + 12,958 + 6,835
49,427
49,735-25,276=_____
24,459
63,000-48,673
14,327
Which property states that addends can be grouped any way and the sum remains the same?
The associative property of addition
Maria added 45,273 and 35,687 and got the sum of 70,960. Is Maria's answer reasonable? Explain.
No, 45,273 + 35,687 is about 45,000 + 36,000=81,000. Maria's sum is not 81,000.
What is the missing digit in the subtraction problem" 365,928 - 17__,259=187,669
8
Find the difference: 60,000-38,243=
21,757