Addition Properties
17+25=42
Which numbers are the Addends?
17 and 25
140-129=11
Which number is the difference?
11
71+13=
84
Round 258 to the nearest hundred
300
17+25=42
Which number is the sum?
42
187-29=
158
27-20=
7
Round 727 to the nearest ten
730
5+0=5
Which property of addition is shown above?
Identity (zero) property of addition
Pat has 265 pins. Chris has 139 pins. How many more pins does Pat have than Chris?
265-139=126
126 more pins
62+34=
96
round to the nearest hundred, then add
198+426=
200+400=600
7+5=5+7
Which property of addition is shown above?
Commutative (order) property of addition
Carrie invited 13 girls to a party. Five of the girls have already arrived. How many more girls are still coming?
13-5=8
8 more girls
72-19=
53
361-117=
400-100=300
(3+4)+5=12 3+(4+5)=12
Which property of addition is shown above?
Associative (grouping) property of addition
5+4=9
4+5=9
9-5=4
9-4=5
A group of related facts using the same numbers are called _________
Fact Family
66-18=
48
Round to the nearest ten and then subtract
186-115=
190-120=70