Doubles & Half Facts

Doubles

100

5+5

10

200

7+7

14

300

9+9

18

400

12+12

24

500

11+11

22

Doubles +1

100

5+6

11

200

7+8

15

300

6+7

13

400

10+11

21

500

20+21

41

Half Facts

100

12-6

6

200

14-7

7

300

16-8

8

400

18-9

9

500

24-12

12

Story Problems

100

There are 12 ducks in the pond. 6 of them leave. How many ducks are left?

6 ducks

200

There are 7 bags of Skittles on the counter. Mrs. Burkhart finds 7 more bags. How many bags of skittles?

14

300

There are 24 granola bars in the box. Joy's family eats half of the granola bars. How many granola bars are left?

12

400

Ray catches 11 fish in the pond. Joe also catches fish in the pond. Together they have 22 fish. How many fish did Joe catch?

11 fish

500

There are 9 pairs of shoes in the closest. How many shoes are there all together?

18

Trickier Doubles

100

30+30=?

60

200

50+50=?

100

300

40+40=?

80

400

500+500=?

1,000

500

90+90=?

180