Addition Missing Number
20 = 6 + ____
14
15 - 7 = ____
8
Tom says that 7+7 is a doubles fact. Is he correct?
Give another example of a doubles fact.
Some examples:
8 + 8
5 + 5
4 + 4
Sarah had 15 marbles. Selena gave her 16 more. How many total marbles does Sarah have now?
31 marbles
There are 23 tennis balls and 13 soccer balls on the field. How many more tennis balls than soccer balls are there?
10 more
11 + 9 = ____
20
25 - 13 = ____
12
Angie says that 4 + 5 is a doubles plus one fact. Is she correct?
Give another example of a doubles plus one fact.
examples:
6 + 7
3 + 4
8 + 9
24 leaves fell off the tree. 43 fell off the next day. How many total leaves fell?
67 Leaves
There are a total of 43 apples. The farmer picks 25 off the tree. How many total apples are still on the tree?
18 apples
5 + 6 = 8 + ____
3
45 - 36 = ____
9
Sarah says that the sum of 6 + 6 is even. Is she correct? How do you know?
Even , because each number has a pair.
The caterpillar crawled up 14 cm up the tree before stopping. It continued to crawl for another 23 cm. How many total centimeters did the caterpillar crawl?
37
One poppit has 34 green bubbles and 27 blue bubbles. How many more green bubbles than blue bubbles are there?
7 more
9 + ___ = 7 + 5
3
74 - 24 = ____
50
Give an example of a make a ten fact.
7 + 3
4 + 6
2 + 8
Sam earned 52 dollars for mowing lawns one week. The next week he earned 23. How much in total did he make?
75 dollars
There is a total of 41 third graders at Alderwood Elementary. 21 students have school lunch. How many students bring a lunch from home?
20 students
4 + 8 + 2 + 6 = ____
20
18 - ____ = 6
12
How can you use a make a ten fact to solve 9 + 5?
9 + 5 is the same as 10 + 4 if you take 1 from the 5 and give it to the 9, and 10 + 4 = 14
74 chocolates
Cara measured her window and got 63 centimeters. She measured her book and got 15 centimeters.
How much longer is the window than the book?
48 centimeters longer