Addition Properties
303 + 0 = ___
303
Identity
45 + 62 = ___
107
34 + 52; tens
80
Isaic jogs 15 minutes more on Sunday than Saturday. He jogged 26 minutes on Saturday.
How many minutes does he jog on Sunday?
How many minutes does he jog in total?
41
67
(3 + 2) + 6 = 3 + (2 + 6)
11
Associative
672 + 49 = ___
721
316 + 532; hundreds
800
It takes Holly 15 minutes to mow the front lawn. It takes her 17 more minutes to mow the back lawn than the front lawn. What is the total amount of time Holly spends mowing the lawns?
47
7 + 5 = ___
5 + 7 = ___
Find the sum. Name the property.
12
Commutative
1342 + 567 = ___
1909
314 + 542; hundreds
850
Team Empower and Team Odyssey sell lemonade to raise funds for a field trip. After selling 58 liters of lemonade in 1 week, they still have 46 liters of lemonade left. How many liters of lemonade did they have at the beginning?
104
4 + 5 = 5 + 4
Find the sum. Name the property.
9
Commutative
324 + 532 = ___
856
1,245 + 531; hundreds
1,700
Sadie, a bear at the zoo, weighs 182 kilograms. Her cub weighs 74 kilograms.
a. Estimate the total weight of Sadie and her cub rounding to the nearest ten kilograms.
b. What is the actual weight of Sadie and her cub?
250
256
(4 + 6) + 9 = ___
4 + (6 + 9) = ___
Find the sum. What is the property?
19
Associative
3472 + 2829 = ______
6,301
4,783 + 4,285; tens
9070
Alex practices the violin for a total of 193 minutes during the first week of school. He practices for 254 minutes during the second week.
a. Estimate the total amount of time Alex practices by rounding to the nearest 100 minutes.
b. What is the actual amount of time Alex practices?
200 + 300 = 500
193 + 254 = 447