Properties of Addition
Which property is shown here?
45,798 + 849= 45,798 + 849 + 0
Identity Property of Addition
1,880 + 3,980
5,860
18,690 - 12,720
5,970
Liam had 2,430 stickers. His friend gave him 520 more.
What operation should you use to find how many stickers Liam has now?
Addition
(Round to the Nearest Ten)
Estimate: 84 + 37
120
Which property says we can change the order of the numbers and it will not change the sum?
Commutative Property
12,550 + 6,623
19,173
25,428 - 16,889
8,539
Walmart has 875 apples. Kroger has 892 apples. How many more apples does Kroger have?
Which operation would you use to solve this?
Subtraction
(Round to the Nearest Hundred)
Estimate: 1,674 – 829
900
David wrote this equation:
84,982 + 46,846 + 9,846= n
Sally rewrote it like this:
(84,982 + 9,846) + 46,846 = n
Which two properties did she use to rewrite David's equation?
Associative and Commutative
Solve:
84,960 + 3,864
88,824
110,693 - 56,209
54,484
A library had 4,768 books. They bought 1,259 more.
How many books do they have now?
6,027 books
(Round to the Nearest Thousand)
Estimate: 8,462 + 5,789
14,000
What is the missing number?
9,647 + (1,560 + 9,300) = (______ + 9,647) + 9,300
8,469 + 4,587 + 2,365
15,421
6,000 - 4,865
1,135
A farmer picked 6,295 ears of corn on Monday and 7,483 on Tuesday.
How many more ears of corn did he pick on Tuesday?
1,188 ears of corn
(Round to the Nearest Ten Thousand)
Estimate: 68,493 – 27,158
40,000
Rewrite this equation using the Associative Property:
84,540 + 96,000 + 14,500= n
Answers may vary
93,899
40,000 - 9,642
30,358
A farmer picked 6,295 ears of corn on Monday and 7,483 on Tuesday.
He sold 8,270 ears at the market.
How many ears of corn does he still have?
5,508 ears of corn
(Round to the Nearest Hundred Thousand)
Estimate: 438,276 + 287,934
700,000