Fill in the missing number (Addition)
18 = _____+ 6
12
What is 17-9?
8
16 – 8 is a Half fact. What is an example of another half fact?
10-5, 12-6, 14-7, 16-8, etc
What is 27 + 14 = ?
41
At a playground, there are 200 children playing on slides and swings. 88 are on the slides. How many are on the swings?
112 are on the swings
_____ + 5 = 14
9
What is 23-11?
12
Is 6 + 7 a doubles plus one fact?
Yes it is!
What is 36 + 25 = ?
61
Mr. Lee has 180 books in his classroom. 75 of them are history books. How many are geography books?
105 geography books
4 + 8 + 2 + 6 = _____
20
What is 41-21?
20
Is 26-13 a half fact?
Yes! Half of 26 is 13!
What is 23 + 34 = ?
57
Ms. Flynn has 215 math and science books in her classroom library. Of the books, 93 of them are math books. How many are science books?
122 Science Books
7 + 8 = _____ + 9
6
What is 63-22?
41
Della says that 7 + 8 is a Doubles Plus One fact. Do you agree with Della?
It is a doubles plus fact.
The double closest to 7 + 8 is 7 + 7 = 14
Then add 1 more: 14 + 1 = 15
What is 59 + 12 = ?
71
Sam drew a line that was 48 cm long. Then he decided he wanted a longer line, so he added some more to it. When he was finished, his line was 73 cm long. How many centimeters did he add to his line?
25 cm
9 + 7 = 10 + _____
6
What is 104-87?
17
Is 100-50 a half fact?
It sure is! Half of 50 is 100!
What is 48 + 17 = ?
65
Sara measured a poster. The first side of the poster was 81 cm long. The second side was 53 cm long. How much longer was the first side than the second side of the poster?
28 cm