Fact Families 1 1

Fact Families 1 1 - Transcript

Fact Families

Definitions
Addend Any number being added

6 5 11
Sum the answer to an addition equation

6 5 11 11

Definitions
Minuend the number subtracted from always the large number 6 5 1 Subtrahend the number subtracted from the Subtrahend minuend always the small number 6 5 1 Difference the answer to a subtraction equation 6 5 1

Which number is the sum

1 6 5 11 1

Which numbers are the addends

6 6 5 5 11

Which number is the difference

6 5 11

Which number is the minuend

6 6 5 11

Which number is the subtrahend

6 5 5 11

Fact Families are made by

Starting with a simple addition fact 2 5 7 Changing the addends around

5 2 7
Now you have three numbers

2 5 and 7

Fact Families are made by

Next use the three numbers 2 5 and 7 to make two subtraction problems

7 5 2 5 2 3

What are the 4 members of the Fact Family 3 4 7

3 4 7 4 3 7 7 3 4 7 4 3

What are the 4 members of the Fact Family

8 1 9

8 1 9 1 8 9 9 8 1 9 1 8

What are the 4 members of the Fact Family

7 3 10

7 3 10 3 7 10 10 7 3 10 3 7

What are the 4 members of the Fact Family

7 2 9

7 2 9 2 7 9 9 7 2 9 2 7

What are the 4 members of the Fact Family

4 5 9

4 5 9 5 4 9 9 5 4 9 4 5

What are the 4 members of the Fact Family

2 3 5

2 3 5 3 2 5 5 2 3 5 3 2

What are the 4 members of the Fact Family

8 4 12

8 4 12 4 8 12 12 4 8 12 8 4

What are the 4 members of the Fact Family

2 6 9

2 6 8 6 2 8 8 2 6 8 6 2

What are the 4 members of the Fact Family

7 1 8

7 1 8 1 7 8 8 7 1 8 1 7

What are the 4 members of the Fact Family

10 3 13

10 3 13 3 10 13 13 3 10 13 10 3

Do you see patterns in fact families

10 3 13 3 10 13 13 13 3 10 13 10 3

The sums are always the same sums

Do you see patterns in fact families

10 3 13 3 10 13 13 13 3 10 13 10 3
The minuends are always the same as the sums minuends sums

Complete the fact family

2 4 6 4 2 6 6 2 4 6 4 2

Complete the fact family

2 4 6 4 2 6 6 2 4 6 4 2

Complete the fact family

4 6 2 6 4 2 4 6 2 2 4 6

Complete the fact family

3 10 7 3 7 10 3 10 7 10 7 3

Complete the fact family

5 9 4 9 5 4 4 9 5 5 4 9