Addition & Subtraction
42 + 23 =
65
74 - 26 =
48
10 more than 563
573
Round 1,529 to the tens place
1,530
12 + 5 = 5 + 12
Commutative Property of Addition
The order in which two numbers are added does not change the sum.
83 - 21 =
62
85 - 67 =
18
1 more than 12,349
12,350
Round 2,746 to the tens place
2,750
(13 +10) + 4 = 13 + (10 + 4)
Associative Property of Addition
The grouping of the addends does not change the sum.
532 - 421 =
111
847 - 52 =
894
10 less than 13,846
13,836
Round 427 to the hundreds place
400
0 + 15 = 15
15 + 0 = 15
Identity Property
For any number, zero plus that number is the number.
987 - 674 =
313
623 - 452 =
270
100 less than 27,972
27,872
Round 48,344 to the thousands place
48,000
The answer to a subtraction problem
Difference
2,962 - 841 =
2,121
607 - 456 =
250
1,000 more than 81,436
82,436
Round 7,263 to the thousands place
7,000
The numbers being added together
Addend