Addition
Subtraction
Arrays
Open Number Lines
Teacher Choice
100

5 + 5 = 

10

100

4 - 3 = 

1

100

Tim had 3 rows of toy cars. He had 2 cars in each row. How many toy cars did he have all together?

6 toy cars


100

10 + 16 = 

Draw the open number line

What is the sum?

26

number line picture

100

Tell me one classroom rule.

Answer....

200

8 + 7 = 

15

200

9 - 6 = 

3

200

The boy had 5 columns of blocks on his desk. He had 3 blocks in each column. How many blocks did the boy have altogether?

15

200

25 + 12 = 

Draw the open number line

What is the sum?

37

number line picture

200

What does decompose mean in math?

To break a number down.

300

15 + 10 =

25

300

12 - 6 =

6

300

Pam put her stuffed animals into 4 rows. She had 4 stuffed animals in each row. How many stuffed animals did Pam have?

16 stuffed animals

300

34 + 25 = 

Draw the open number line

What is the sum?

59

number line picture

300

What are addends?

The two numbers you add together in an addition equation.

400

25 + 8 =

33

400

18 - 10 =

8

400

Mike was counting his Pokemon Cards. He put them in 6 columns and had 3 cards in every column. How many Pokemon Cards did Mike have altogether?

18 Pokemon Cards

400

41 + 37 = 

Draw the open number line

What is the sum?

78

number line picture

400

What is a sum?

The whole number or total number that you have in an equation.

500

34 + 15 = 

49

500

26 - 15

11

500

Mr. Cooper has a sum of ten Gator footballs in his office. Mr. Cooper used his ten Gator footballs to create an array. What did it look like? How many Gator footballs were in each row or column?

2 Gator footballs in each row/column

Picture...

500

54 + 21 = 

Draw the open number line

What is the sum?

75

number line picture

500

What does collaboration mean?

To work together.

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