Fact Families
Word Problems / unknown numbers
Make a 10
Odd & Even
Arrays
100

3, 5, 8

3+5=8

5+3=8

8-3=5

8-5=3

100

8+7=__+6

9

100

7+5

10+2=12

100

8

Even

100

* * *

* * *

3+3= 6

2+2+2=6

3x2=6

2x3=6

200

7, 2, 9

7+2=9

2+7=9

9-7=2

9-2=7

200

Ray baked 11 pies. His family ate 2 pies and he gave away 4 pies to neighbors. How many pies does Ray have left?

Step 1: 11-2=9

Step 2: 9-4=5 

200

4+9= 

3+10=13

200

14

even

200

* * * * *

* * * * *

* * * * *

5+5+5=15

3+3+3+3+3=15

5x3=15

3x5=15

300

10, 12, 2

10+2=12

2+10=12

12-2=10

12-10=2

300

10-4= __+2

4

300

6+6=

10+2=12

300

19

Odd
300

* *

* *

* *

* *

2+2+2+2=8

4+4=8

2x4=8

4x2=8

400

15, 11, 4

11+4=15

4+11=15

15-4=11

15-11=4

400

Sophia picked up 7 leaves and gives away

3 of the leaves. She then finds 5 more.

How many leaves does she have now?

step 1: 7-3= 4

step 2: 4+5=9

400

2+9= 

1+10=11

400

70

Even
400

3 rows of 4

3+3+3+3= 12

4+4+4=12

3x4=12

4x3=12

500

19, 11, 8

11+8=19

8+11=19

19-11=8

19-8=11

500

Jessica raked 3 piles of leaves in the front yard and 7 piles of leaves in the back yard. She put 2 piles into plastic bags. How many piles are left in the yard?

Step 1: 3+7=10

Step 2: 10-2= 8

500

7+9=

6+10=16

500

375

Odd

500

6 rows of 5

6+6+6+6+6=30

5+5+5+5+5+5=30

5x6=30

6x5=30

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