Doubles Facts
Missing Add-end
Word Problem
Doubles +1
Subtraction
100

7 + 7 = ?

14

100

10 + ____ = 16

6

100

There were 7 ducks in the pond. 5 ducks left the pond. How many ducks are left in the pond? 

2 ducks 

7-5=2

Subtract - left the pond 


100

7 + 8 = ?

15

7+7=14

14+1=15

100

10 - 5 = ?

5

200

5 + 5 = ? 

10

200

37 + ____ = 42

5

200

There were 10 boats near the dock. 8 boats left the dock. How many boats are left at the dock? 

2 boats 

10-8=2


200

6 + 7 = ?

13

6+6=12

12+1=13

200

13 - 7 = 

6


300

6 + 6 = ?

12

300

77 + ____ = 87

10

300

There were 6 bees in the hive. 6 more bees came to the hive. How many bees are all together?

12 bees

6+6=12

300

5 + 6 = ?

11

5+5=10

10+1= 11

300

22 - 3 = ?

19

400

8 + 8 = ?

16

400

82 + ____ = 90

8

400

There were 12 ladybugs on the grass. 4 ladybugs flew away. How many ladybugs are left? 

8 ladybugs

12-4=8

400

8 + 9 = ?

17

8+8=16

16+1=17

400

50 - 5 = ?

45

500

9 + 9 = ?

18

500

44 + ____ = 53

500

There were 16 ants on the log. 4 ants left the log. How many ants are left on the log?

12 ants 

16-4= 12

500

4 + 5 = ?

9

4+4=8

8+1=9

500

80 - 3 = ?

77

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