Vocabulary
Missing Addends
Commutative Property
Fact Families
Multiplication / Division
100
Two or more numbers that are added to find a sum.
What is addends
100
5+A=8
A=3
100
4+5=9
5+4=9
100
4,5,9
4+5=9 5+4=9 9-5=4 9-4=5
100
6x0
What is 0
200
The result of addition.
What is Sum.
200
2+R=9
R=7
200
5+8=13
8+5=13
200
2,6,8
2+6=8 6+2=8 8-2=6 8-6=2
200
4x3
12
300
The result of subtraction.
What is difference.
300
12+E=19
E=7
300
13+7=20
7+13=20
300
3,4,7
3+4=7 4+3=7 7-3=4 7-4=3
300
7x3
What is 21
400
The result of multiplication.
What is product.
400
24+P=48
P=24
400
25+35=60
35+25=60
400
12,8,4
8+4=12 4+8=12 12-8=4 12-4=8
400
6x6
What is 36
500
Changing the order of addends does not change their sum. In symbolic form a+b=b+a.
What is commutative property of addition.
500
50+K=100
K=50
500
4 x 5=20
5x4=20
500
25,5,20
20+5=25 5+20=25 25-5=20 25-20=5
500
9x8
What is 72
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