Addition
7 + 3 + 6 =
16
20 - 10 - 6 =
4
Jill, Chris, and Bobby are building with blocks. Jill has 6 blocks. Chris has 8 blocks. How many blocks does Bobby have if they have 19 blocks in all?
6 + 8 = 14
19 - 14 = 5
5 blocks
15 - 6 = 9 students
I know when a problem reads "how many are there in total" I have to (add/subtract)
ADD!
13 + 2 + 5 =
20
26 - __ = 10
16
Ms. Lee gave the students 6 pencils each. Then, she gave them more so that they had 10 pencils each. How many more pencils did Ms. Lee give to each student?
6 + __ = 10
4 pencils
Linda has 7 picture books and 6 coloring books. How many more books does Linda need if she wants a total of 17 books?
7 + 6 = 14
17 - 14 = 3
3 books
When I read "how many are left" I know I have to (add/subtract)
SUBTRACT!
150 = __ + 90
60
True or False:
5 + 6 = 10 - 1
False
Sherri, Tim, and Nala want to play golf. Sherri has 14 golf balls. Tim has 16 golf balls. How many golf balls does Nala have if they have 40 in all?
14 + 16 = 30
40 - 30 = 10
10 golf balls
There are 24 students in the class. Eight students go to orchestra lessons. How many students are left in the class?
24 - 8 = 16 students
The answer to an addition problem
What is a sum?
57 + 28 =
85
72 - 46 =
26
Roden went to a pet shop. He bought 15 gold fish, 7 blue fish and 3 packages of fish food. How many fish did he buy?
15 + 7 = 22.
He bought 22 fish.
Maya has a brand-new sheet of 80 sparkly stickers. She wants to share them with her friends and family. First, she gives 20 stickers to her best friend, Sam. Next, she gives 15 stickers to her little sister. How many stickers does Maya have left on her sheet?
Maya has 45 stickers left.
The answer to a subtract problem
What is the difference?
234 + 461 =
695
624 - 281 =
343
Lucy went to the grocery store. She bought 18 bags of chips, 13 cans of soda, and 9 bananas. How many items did Lucy buy?
18 + 13 + 9 = 40 items
Leo starts his Saturday with a giant bowl containing 450 Goldfish crackers. First, his hungry dog jumps up and gulps down 125 crackers while Leo isn't looking. An hour later, Leo’s little brother trips and spills another 68 crackers onto the floor, which have to be thrown away. How many crackers does Leo have left in his bowl?
Leo has 257 crackers left.
The numbers we add together to make a sum