Addition
Writing Equations
Strategies
Word Problems
Subtraction
100

5 + 6 = ____

11

100

Write an addition equation that equals 12.

Possible Answers:

1 + 11 = 12, 2 + 10 = 12, 3 + 9 = 12, 4 + 8 = 12, 5 + 7 = 12, 6 + 6 = 12

**Other answers are possible**

100

16 - 8 is a half fact. Write another half fact.

Examples:

12 - 6, 14 - 7, 10 - 5, 8 - 4, 20 - 10, 18 - 9

**Other answers are possible**

100

Emma ran 12 miles on Monday, 8 miles on Tuesday, and 4 miles on Wednesday. How many miles did she run in all?

24 miles

100

15 - 7 = ____

8

200

____ = 13 + 9

22

200

Write a subtraction equation that equals 8.

Possible answers:

10 - 2 = 8, 12 - 4 = 8, 9 - 1 = 8, 8 - 0 = 8, 13 - 5 = 8


**Other answers are possible**

200

5 + 6 is a doubles plus one fact. Write another doubles plus one fact.

Examples: 4 + 5, 6 + 7, 7 + 8, 8 + 9, 9 + 10, 10 + 11

**Other answers are possible**

200

Sammy drew a line that was 25 centimeters. Then, he decided he wanted a longer line, so he added more to it. When he was finished, his line was 47 centimeters long. How much did he add to his original line?

22 centimeters

200

____ = 20 - 11

9

300

12 + ____ = 19

7

300

Write an equation for the following word problem:

Bobby has 16 cookies. He gives 5 of them to his sister. How many cookies does Bobby have left?

16 - 5 = 11 cookies

300

6 + 3 is an example of a Count On Fact. Write another example of a Count on Fact.

Examples: 1 + 2, 1 + 3, 5 + 2, 5 + 3, 6 + 3, 7 + 1

**Other answers are possible**

300

Mrs. Karolczak has 24 books in her library. 13 of these books are Realistic Fiction, and the rest are Science Fiction. How many books are Science Fiction?

11 books

300

16 - ____ = 9

7

400

4 + 6 + 3 + 7 = _____

20

400

Write an equation for the following word problem:

Katie and Kelly are having a lemonade stand. Katie sells 9 cups of lemonade and Kelly sells 7 cups of lemonade. How many cups did the girls sell in all?

9 + 7 = 16 cups of lemonade

400

Jackson says that the answers to all Take Away Tens Facts (15 - 10) are going to be even. Do you agree with Jackson?

No

400

My mom put candy in a basket to hand out to trick-or-treaters. There are 38 Kit-Kats and 25 Reese's Peanut Butter Cups. How many more Kit-Kats are there?

13 Kit-Kats

400

20 - 5 - 3 = ____

12

500

7 + 8 = ____ + 9

15

500

Write an equation for the following word problem.

There are 20 students in Ms. Wengerhoff's class. 12 students are boys. How many students are girls?

20 - 12 - 8

500

Kim says that all doubles facts (5 + 5) have even sums. Do you agree with Kim?

Yes

500

Annie read 37 pages yesterday, and 52 pages today. Brady read 32 pages yesterday, and 65 pages today. Who read more books over the two days? How many more pages did they read?

Brady - 8 more pages

500

12 - 8 = 10 - ____

6