Skip Counting
Doubles
Arrays
Even/Odd
100
5, 10, 15, 20...
What is skip counting by 5's
100
What expression can be written with two equal addends for a sum of 6?
3 + 3
3 and 3 are two equal addends that = 6
100
What is wrong with this array?
The array is missing two squares
100
True or False:
10, 6, 13, 5, 12 are all even numbers
False:
Only 10, 6, 12 are even numbers
200
Skip count to 100 by 10's
10, 20, 30, 40, 50, 60, 70, 80, 90, 100.
200
What expression can be written with two equal addends for a sum of 12?
6 + 6
6 and 6 are two equal addends that = 12
200
Draw two arrays for the expression:
4 + 4 + 4
200
If 15 is an odd number, what are two ways can we make it even?
Add 1 or subtract 1:
15 + 1 = 16 (even)
15 - 1 = 14 (even)
300
Skip count by 100 to 1,000
100, 200, 300, 400, 500, 600, 700, 800, 900, 1000
300
What expression can be written with two equal addends for the sum of 14?
7 + 7
7 and 7 are two equal addends that = 14
300
Draw two arrays for the number 16
300
Andre and Jada have the same number of markers.
True or False:
Andre and Jada each have an odd number of markers.
True:
If Andre has 3 markers and Jada has 3 markers,
3 + 3 = 6 (even)
If Andre has 7 markers and Jada has 7 markers,
7 + 7 = 14 (even)
400
Skip count by 5's from 47 to 77?
47, 52, 57, 62, 67, 72, 77
400
What expression can be written with three equal addends for the sum of 9?
3 + 3 + 3
3 and 3 and 3 are three equal addends that = 9
400
Draw three arrays for the number 20
400
Tyler has 23 erasers and Priya has 18 pencils. If they put them all together, is the total number of erasers and pencils even or odd?
Odd:
23 + 18 = 41 (odd)
500
Skip count by 10's from 165-205?
165, 175, 185, 195, 205
500
What expression can be written with 4 equal addends for the sum of 20?
5 + 5 + 5 + 5
5 and 5 and 5 and 5 are four equal addends that = 20
500
Why does the following array only have 1 possible expression:
Because there are 3 in each row and 3 in each column:
3 + 3 + 3 = 9 (row)
3 + 3 + 3 = 9 (column)
500
Ms. Curry has an odd number of notebooks, and Ms. Wilson & Ms. Minifie have an even number of notebooks.
True or False:
The total number of notebooks is odd.
True:
3 + 6 = 9 (odd)
5 + 10 = 15 (odd)
7 + 12 = 19 (odd)