Odd and Even
Write down all single-digit even numbers
0, 2, 4, 6, 8
Look at the rectangle from Mrs. Rohrer.
How many rows are there? How many squares are in each row?
3 rows
6 squares in each row
Draw an array to show the number 9.
3 rows and 3 columns
Write an addition equation that matches this array.
2+2+2+2+2+2
6+6
Does Mrs. Rohrer's picture show an even or odd number?
Odd - 21
Write down all single-digit odd numbers
1, 3, 5, 7, 9
Look at the rectangle from Mrs. Rohrer.
How many columns are there? How many squares are in each column?
6 columns
3 squares in each column
Draw an array to show the number 20
10 rows and 2 columns
2 rows and 10 columns
4 rows and 5 columns
5 rows and 4 columns
Write an addition equation that matches this array
3+3+3+3
4+4+4
Does Mrs. Rohrer's picture show an even or odd number?
Even - 18
Which two equations represent an odd number?
A. 7 + 9 =
B. 10 + 11 =
C. 15 + 8 =
D. 12 + 6 =
B and C
10 + 11 = 21
15 + 8 = 23
How many squares are in the rectangle all together? Write an equation to show how you know.
18 squares
6+6+6 or 3+3+3+3+3+3
Draw an array represented by this equation:
5+5+5
3 rows and 5 columns
5 rows and 3 columns
Write 2 addition equations that match this array.
5+5+5+5
4+4+4+4+4
Draw a dot picture that represents an even number between 10 and 20.
Answers vary.
Write two equations using two 2-digit numbers that equal an even number
Possible answers:
10 + 10, 14 + 12
Using the rectangle from Mrs. Rohrer, partition it into 12 equal size squares.
4 rows and 3 columns
Draw an array represented by this equation:
4+4+4+4+4+4
4 rows and 6 columns
6 rows and 4 columns
Write 2 addition equations that match this array.
3+3+3+3+3+3+3
7+7+7
Draw a dot picture that represents an odd number between 10 and 20.
Answers vary
Write two equations using two 2-digit numbers that equal an odd number
Possible answers
11 + 10, 13 + 16
Using the rectangle from Mrs. Rohrer, partition it into 10 equal squares.
2 rows and 5 columns
Draw an array using any odd number
9, 15, 21
Which two statements are true about Mrs. Rohrer's array.
A. The total number is even.
B. The total number is odd.
C. The total number is 5+5+5+5+5+5
D. The total number is 6+6+6+6+6+6
A and C
Write the following three even numbers as the sum of 2 equal numbers.
A. 8
B. 14
C. 22
A. 4+4
B. 7+7
C. 11+11