Properties and Rules
34 + 27 = 27 + 34
What is the Commutative Property of Addition?
784 + 137 =
What is 921?
326 - 157 =
What is 169?
the answer to a subtraction problem
What is the difference?
Estimate to the nearest hundred.
146 + 275 =
What is 400?
37 - 0 = 37
What is the rule -- a number minus 0 is that number?
907 + 243 =
What is 1,150?
500 - 213 =
What is 287?
The order in which numbers are added does not change the sum according to this property.
What is the Commutative Property of Addition?
Estimate to the nearest hundred.
517 + 267 =
What is 800?
(87 + 49) + 16 = 87 + (49 + 16)
What is the Associative Property of Addition?
5,816 + 184 =
What is 6,000?
2,501 - 1,427 =
What is 1,074?
The way in which numbers are grouped does not change the sum according to this property.
What is the Associative Property of Addition?
Estimate to the nearest thousand.
2,459 + 3,823 =
What is 6,000?
89 - 89 = 0
What is the subtraction rule -- a number minus itself equals 0.
14,824 + 5,676 =
What is 20,500?
4,000 - 2,461?
What is 1,539?
An _____________ is close to the exact answer.
What is an estimate?
Estimate to the nearest ten thousand.
12,751 + 6,127 =
What is 20,000?
54 + 0 = 54
What is the Identity Property of Addition?
276,485 + 341,952 =
What is 618,437?
12,849 - 4,962 =
What is 7,887?
To change the value of a number to one that is easier to work with is to ___________.
What is round?
Estimate to the nearest hundred thousand.
379,092 + 617,825 =
What is 1,000,000?