Find missing addends
Straight up addition
Straight up subtraction
Word Problems
Strategies
100

7 + ____ = 13

6

100

4 + 8 + 2 + 6 = ____

20

100

17 - 9 = ___

8

100

Aydin's book is 16 centimeters long. The book is 5 centimeters longer than his pencil. How long is his pencil? Which of the following represents this situation?

p stands for pencil

A.) 16 + 5 = p

B.) p + 16 = 5

C.) 5 - p = 16

D.) p + 5 = 16

D.) p + 5 = 16

100

True or False: 5 + 6 is a Doubles Plus One fact? 

True. 5 + 5 is a Doubles Fact. So, 5 + 6 would be doubles plus one more. 


200

18 = _____ + 5

13

200

35 + 11 + 14 + 29 = ____

89

200

____ = 15 - 9

6

200

Ms. Scott has 227 non-fiction and fiction books in her classroom library. Of the books, 96 of them are non-fiction. How many are fiction?

131 books

200

14 - 7 is a Half Fact. Write one more Half fact. 

Answers may vary. 

10 - 5

12 - 6

16 - 8

8 - 4

etc...

300

9 + 5 = 10 + _____

4

300

58 + 75 = 

133

300

18 - 7 = ___

11

300

Lucas read 104 pages in his book this weekend. Elsa read 134 pages. How many more pages did Elsa read this weekend?

30 pages

300
True or False: All Doubles facts have even sums. 

(Ex. of a Doubles Fact --> 6 + 6)

True

For example: 6 + 6 = 12

5 + 5 = 10

2 +2 = 4

7 + 7 = 14

9 + 9 = 18

400

5 + 5 = 3 + ______

7

400

134 + 172 = ___

306

400

91 - 43 = ____

48

400

This weekend, Christopher walked Krieger on this path. How far did Pher and Krieger walk in all?

162 yards

400

Write two examples of Doubles Facts.

Answers may vary...

4 + 4 = 8

6 + 6 = 12

etc...

500

6 + 7 = _____ + 8

5

500

214 + 176 + 319 = ____

709

500

147 - 94 = _____

53

500

Write and solve an equation to math this problem --> 

"Emilia has 13 scrunchies and 8 colored markers in her backpack. How many more scrunchies are in her backpack?"

13 - 8 = 5 

OR 

8 + 5 = 13

There are 5 more scrunchies

500

Explain how you can use a Make Ten Fact to solve 9 + 3. Include the answer to 9 + 3 in your explanation.

Answer may look something similar to this:

I know that 9 + 1 = 10. Therefore, 9 + 3 has to be two more than 10 which is 12.