Counting on/ back
2 count on 1 equals
3
What is the doubles fact for 4
4+4=8
Is this fact true 3+4=4+3?
Yes
Circle the numbers you would add first using the associative property.
5+5+1=
5+5
True or false 1,2,3 are in a fact family.
True
You have 3. Count on 3. You have _____.
6
What is the doubles plus one and doubles minus one fact for 3+3=6
3+2=5
3+4=7
Which shows the commutative property?
A. 1+2=3
B.5+3=3+5
C. 5+5
B
Circle the numbers you would add first using the associative property. Solve.
4+6+2=
12
4+6
True or false 5,2,4 are in a fact family.
false
You have 6. Count on 2. What is the related addition fact?
6+2=8
What is the doubles plus one and doubles minus one fact for 5+5=10?
5+4=9
5+6=11
Which shows the commutative property?
A. 1+1
B.4-7=-3
C. 4+5=5+4
C
Circle the numbers you would add first using the associative property. Solve.
3+3+2=
8
3+3
Write the fact family for 2, 3, and 5.
2+3=5
3+2=5
5-2=3
5-3=2
You have 7. Count back 3. What is the related subtraction fact?
7-3=4
What is the doubles plus one and doubles minus one fact for 9+9=18?
9+8=17
9+10=19
Which one shows the commutative property? How do you know?
a. 6+4= 10 =4+6
b. 3+1
c.8x8
a (teacher approves response)
Circle the numbers you would add first using the associative property. Solve.
9+1+10=
20
9+1
Write the fact family for 4, 2, and 6.
4+2=6
2+4=6
6-4=2
6-2=4
You have 1,354. Count back 3. What is the related subtraction fact?
1,354-3= 1,351
What is the doubles plus one and doubles minus one fact for 112+112=224
112+111=223
112+113=225
What is the Commutative property fact for 5230+2391=7621
2391+5230=7621
Circle the numbers you would add first using the associative property. Solve.
100+900+1000=
2000
900+100
Write the fact family for 200, 300, and 500.
200+300=500
300+200=500
500-200=300
500-300=200