What are the 3 properties of addition we learned about?
Add.
403+511
914
Round to the nearest hundred to estimate the difference:
989+110
1,000+100
1,100
934-422
512
Whitney had 45 skittles. She gave 23 of the skittles to Bita. How many skittles does Whitney have left?
45-23=22
She has 22 left
What property does this equation represent:
5+0=5
Identity
Add.
101+(20+30)
151
Round to the nearest ten to estimate the sum:
549+54
550+50
600
Subtract.
989-872
117
Brandon brought 12 cookies to school. Tate brought 13 more cookies to school. How many cookies do they have total?
12+13=25
What property of addition is this equation an example of:
90+35=35+90
Commutative Property
125,067+101
125,168
Round to the nearest hundred to estimate the sum:
770+330=
Find the difference.
7,023-1,072
5,951
Lila has 45 stickers. Karter has 49 stickers. How many stickers do they have together?
94
What property of addition is this equation an example of:
(109+98)+35= 35+(109+98)
Associative Property
5,550+1,663
7,213
Round to the nearest ten to estimate the difference:
303-78
300-80=
220
Find the unknown.
609+______ = 845
845-609=236
Alyssa has 440 pennies. She gave 239 of the pennies to Elshaday. How many pennies does she have left?
440-239=201
Write an equation to represent the Commutative Property:
Answers will vary
Find the sum.
110,545+30,235
140,780
Round to the nearest ten thousand to find the sum:
78,029+21,002
80,000+20,000
100,000
Find the unknown:
1,342+_______ = 1,500
1,500-1,342=158
Arsema has 12 blue M&Ms and 19 red M&Ms. She gave 8 M&Ms to Colin. How many M&Ms does she have left?
12+19= 31
31-8=23
She has 23 left