Count On
Luis has 7 paper airplanes. He makes 9 more. How many paper airplanes does Luis make in all?
16 paper airplanes
Use the number line to show 9 + 3
12
Mark has 7 red marbles. He has 8 blue marbles? Mark wants to know how many marbles he has overall.
What are the two problems Mark can use to find the answer?
10 + 5 = 15 and 7 + 8 = 15
Which is a doubles fact?
4 + 6
10 + 5
7 + 7
3 + 8
7 + 7
9+3
12
Sandy makes 9 bracelets. Then she makes 5 more. How many bracelets does Sandy have now?
14 bracelets
Use a number line to solve the problem.
Tonya waters 8 trees. Then she waters 3 more trees. How many trees did she water?
11 trees
Gloria has 7 yellow pencils. She has 9 red pencils. How can Gloria make 10 to help her figure out how many pencils she has overall?
10 + 6 = 16 so 7 + 9 = 16, she has 16 pencils.
What is a double problem that has a sum of 18?
9 + 9
7+8
15
8 birds are sitting in a tree. 9 more birds join them. How many birds are in the tree now?
17 birds
Ben drinks 6 more glasses of water than Becky.
Becky drinks 8 glasses. How many glasses did Ben drink?
14 glasses
Find 8 + 5. Make 10 to add.
10 + 3 = 13 so 8 + 5 = 13
Maria has 8 more scarves than Lucy.
Lucy has 8 scarves.
How many scarves does Maria have?
16 scarves
6+8
14
Roger read 9 books in January. He read 4 more books in February. How many books did Roger read?
13 books
There are 14 monkeys swinging in a tree. 5 monkeys jump to another tree. How many monkeys are left? Use the number line.
9 monkeys
There are 6 lizards in the pet store. The store adds 8 more lizards in a tank next door. How many lizards does the pet store have overall? Make 10 to find out.
10 + 4 = 14 so 8 + 6 = 14
John sees 5 kites flying at the beach. Linda points out that there are 6 more kites. Can you use a double to help you solve this?
Yes, 5 + 5 = 10 so 5 + 6 = 11 kites
8+5
13
The class is taking a vote. On the first count 10 students like apples. 2 girls come back from the bathroom and say they like apples. 3 boys come back from the bathroom, but only 1 of them likes apples. How many students like apples?
10 + 2 = 12 then add 1 more to get 13
There are 17 limes on the table. 9 fall to the floor. How many are left on the table? Use the number line.
8 limes
A writer makes 9 stories in a year. She writes 3 more stories the next year. How many stories does the writer have overall? Make 10 to solve.
10 + 2 = 12 so 9 + 3 = 12
The students are trying to solve the problem 5 + 8. Allie says using a double would help you. Olivia says a double would not be helpful. Who is right?
Olivia
9+9
18