Vocabulary
What is a addend?
the numbers you are adding
What's missing ?
17 - 9 =
17 - ____ = 10
10 - 2 = 8
17 - 9 = 18
7
5 rows of 5
Anthony has 3 boxes of pokemon cards. In each box there are 10 cards. How many cards does he have in all?
30
What's the related fact?
13 - 7 = 6
6 + 7 = 13
When you count back are you adding or subtracting?
subtracting
15 - 7 =
15 - 5 = 10
10 - __ = 8
15 - 7 = 8
2
3 rows of 6
18
Ariel bakes 5 batches of cookies. Each batch has 5 cookies in it. How many cookies did she bake?
25
What's the related fact?
10 - 5 = 5
5 + 5 = 10
When you count up are you adding or subtracting?
adding
13 - 8 =
13 - 3 = 10
10 - ___ = ___
13 - 8 = ____
10 - 5 = 5
13 - 8 = 5
9 rows of 2
18
Cameron has 15 wrestling men and Alexander has 7. How many more wrestling men does Cameron have than Alexander?
8
20 - 10 = 10
10 + 10 = 20
What is the sum?
The total of a addition problem
18 - 9 =
18 - ___ = 10
10 - ___ = ___
18 - 9 =
18 - 8 = 10
10 - 1 = 9
18 - 9 = 9
10 rows of 10
100
Joshua has a closet full of shoes. He has 8 shelves and 4 pairs of shoes on each shelf. How many pairs of shoes does he have?
32
7 + 5 = 12
12 - 7 = 5
12 - 5 = 7
What is the difference in math?
The total of a subtraction problem
Solve by making a ten
14 - 9 =
14 - 4 = 10
10 - 5 = 5
14 - 9 = 5
8 rows of 5
40
There are 14 dogs at the park some are playing catch and 6 are playing frisbee. How many are playing catch?
8
130 - 30 = 100
100 + 30 = 130