Subtraction/Fact Families

Fact Families

100

1,2,3

1+2=3 2+1=3 3-1=2 3-2=1

200

3,5,8

3+5=8 5+3=8 8-3=5 8-5=3

300

3,7,10

3+7=10 7+3=10 10-3-7 10-7=3

400

8,3,11

8+3=11 3+8=11 11-3=8 11-8=3

500

7,9,16

7+9=16 9+7=16 16-9=7 16-7=9

Missing Addend

100

1+?=9

9-1=8 8

200

3+?=7

7-3=4 4

300

12-?=7

5+7=12

400

8+?=16

16-8=8 8

500

15-?=6

9+6=15

Relation Fact

100

14-5=?

Think 5+9=14

200

11+5=?

Think 16-5=11 or,

16-11=5

300

12-7=?

Think 7+5=12

400

8+5=13

Think 13-5=8 or,

13-8=5

500

17-9=?

Think 9+8=17

Story Problems 1

100

There were 15 children on the ferris Wheel. When it stopped, 6 children got off. How many children stayed on the ferris wheel?

16-6=9 9 children got off

200

After lunch, 9 girls and 7 boys rode the merry go round. How many children rode the ferris wheel?

9+7=16 16 children

300

There were 16 toy lion prizes and 7 toy tiger prizes. How many more toy lion prizes than tiger prizes were there?

16-7=9 9m more lion prizes

400

In the arcade, Sam won 4 video games. He also won some pinball games. Sam won 12 games altogether. How many pinball games did Sam win?

12-4=8 8 pinball games

500

In an hour, the popcorn stand sold 10 large boxes of popcorn and 5 small boxes of popcorn. How many more large boxes than small boxes were sold?

10-5=5 5 more large boxes