Number Sentences
7 + 2 = ___
7 + 2 = 9
Spiderman caught 2 bad guys in the morning and 3 more in the afternoon, how many bad guys did he catch in all?
2 + 3 = 5
5 bad guys
Any numbers being added together are called...
Addends
Show how to use the counting on strategy to find the sum.
7 + 5 =
7, 8, 9, 10, 11, 12
7 + 5 = 12
Use a strategy to solve.
5 + 3 = ___
5 + 3 = 8
8 + 8 = ___
8 + 8 = 16
Mrs. Tokarski has 4 books, Mr. Conley has the same number of books. How many books do they have all together?
4 + 4 = 8
8 books
A line with number labels is called a...
Number line
Write the 2 doubles facts you could use to help you find the sum.
7 + 8 = ___
7 + 7 = 14
8 + 8 = 16
so... 7 + 8 = 15
2 + 2 + 5 = ____
2 + 2 + 5 = 9
13 + 6 =
13 + 6 = 19
Mr. Harmon had 7 Pokemon cards, Mr. Wong gives him 6 more Pokemon cards. How many Pokemon cards does Mr. Harmon have in all?
7 + 6 = 13
13 Pokemon cards
Two addends that are the same are called...
Doubles
Show how to use a number line to find the sum.
9 + 3 = ___
9 + 3 = 12
Mrs. Cardo had 2 slices of pizza, Mrs. Van Pelt had 3 slices, and Ms. Christiansen had 2 slices. How many slices of pizza did they eat in all?
2 + 3 + 2 = 7
7 slices of pizza
12 + 12 = ____
12 + 12 = 24
Mrs. Melissaratos had 4 cookies, Ms. Schmidt had 6 cookies, and Mrs. McAdams had 5 cookies. How many cookies did they eat in all?
4 + 6 + 5 = 15
15 cookies
On a number line, start with the greater number and count up.
What do you call this strategy?
Counting on
Use the doubles plus one strategy to solve.
7 + 8 = ____
What doubles fact can you use to find the sum?
7 + 7 = 14
14 + 1 = 15
7 + 8 = 15
Add with doubles and subtract 1. What is this strategy called?
Doubles minus 1
1 + 7 + 9 = ____
1 + 7 + 9 = 17
Dr. J has 8 instruments, she gets some more, now she has 16 instruments. How many more instruments did she get?
8 + 8 = 16
8 instruments
Add with doubles and add one more. What is this strategy called?
Doubles plus 1
Use the doubles minus 1 strategy to solve.
6 + 5 = ____
What doubles fact can you use to find the sum?
6 + 6 = 12
12 - 1 = 11
6 + 5 = 11
Mrs. Kovacs had 9 paintbrushes, she got 5 more. She has 14 paintbrushes. What is the question?
Example: How many paint brushes does she have in all?