Grouping Objects in Ones
and Tens
Number Sense: 1.0
Count and group objects in ones and tens (e.g., three
groups of 10 and 4 equals 34, or 30+4
Our Learning Objective
Today we will count and group objects in
ones and tens.
CFU: What will we do today boys and girls?
What are we going to group the objects in?
Activate Prior Knowledge
We know that numbers zero to nine have
only one digit. For example:
0 1 2 3 4 5 6 7 8 9
Once we reach 10 we have two digits
and we call this 10.
We are going to visit the website
below to help us practice counting
ones and tens using base 10 blocks.
http://www.learningbox.com/Base10/BaseTen.html
Wow all the bats flew out of the
cave!!!!
Concept Development
I will need to count them all
one by one to find out how
many flew out, but before I
do, I will follow the right
steps to counting.
Guided Practice
Steps
Step one: Count ten bats.
Step two: Draw a circle around the group of ten
bats.
Step three: Keep making groups of ten until you
only ones left.
Step four: Write the number of the group of
tens in the tens column and the
number of ones left over in the ones column.
Step five: Write your number on the line. The number
you write is the number of bats that flew out of the
cave.
I will need to count them in order to find out how many flew out. I
will make groups of tens first and then count the ones left over.
Skill Development
Let’s find out if we counted correctly.
15
2
1
3
4
21
16
6
20
8
5
7
10
9
11
Skill Development
14
12
13
23
18
17
19
22
24
I counted 24 bats
The number 24 has
2 groups of ten and 4 ones.
2 4
Tens
Guided Practice
Ones
Guided Practice 1
Guided Practice 2
Guided Practice 3
Importance
It is important to know how to group
object in tens and ones because it helps us
count correctly and helps us understand
place value.
Non-Example
1
2
3
4
5
Counting five bats,
is not an example of counting tens and
ones since you are only counting ones.
Name:_____________________
Independent Practice 1
Steps
Step one: Count ten bats.
Step two: Draw a circle around the group
of ten bats.
Step three: Keep making groups of ten
until you only ones left.
Step four: Write the number of the group
of tens in the tens column and the number
of ones left over in the ones column.
Step five: Write your number on the line.
The number you write is the number of
bats that flew out of the cave.
How many flew out?
Tens
Ones
____________
Name:_____________________
11
1
Independent Practice 1
Steps
Step one: Count ten bats.
Step two: Draw a circle around the group of
ten bats.
Step three: Keep making groups of ten until
you only ones left.
Step four: Write the number of the group of
tens in the tens
column and the number of ones left over in
the ones
column.
Step five: Write your number on the line.
The number you write is the number of bats
that flew out of the cave.
2
12
3
13
4
5
16
23
17
18
24
22
27
21
25
26
28
14
19
29
15
20
30
32
33
34
35
6
36
7
38
8
31
37
39
How many flew out?
9
10
____________
Tens
Ones
Name:_____________________
Independent Practice 2
Steps
Step one: Count ten bats.
Step two: Draw a circle around the group
of ten bats.
Step three: Keep making groups of ten
until you only ones left.
Step four: Write the number of the group
of tens in the tens column and the number
of ones left over in the ones column.
Step five: Write your number on the line.
The number you write is the number of
bats that flew out of the cave.
How many flew out?
Tens
Ones
____________
Name:_____________________
11
1
Independent Practice 2
Steps
Step one: Count ten bats.
Step two: Draw a circle around the group of
ten bats.
Step three: Keep making groups of ten until
you only ones left.
Step four: Write the number of the group of
tens in the tens
column and the number of ones left over in
the ones
column.
Step five: Write your number on the line.
The number you write is the number of bats
that flew out of the cave.
2
12
3
13
4
5
16
23
17
18
14
19
15
20
24
22
25
27
26
21
29
28
30
31
32
6
7
33
8
How many flew out?
9
10
____________
Tens
Ones
Name:_____________________
Independent Practice 3
Steps
Step one: Count ten bats.
Step two: Draw a circle around the group
of ten bats.
Step three: Keep making groups of ten
until you only ones left.
Step four: Write the number of the group
of tens in the tens column and the number
of ones left over in the ones column.
Step five: Write your number on the line.
The number you write is the number of
bats that flew out of the cave.
How many flew out?
Tens
Ones
____________
Name:_____________________
1
Independent Practice 3
Steps
Step two: Draw a circle around the group of
ten bats.
Step three: Keep making groups of ten until
you only ones left.
Step four: Write the number of the group of
tens in the tens
column and the number of ones left over in
the ones
column.
Step five: Write your number on the line.
The number you write is the number of bats
that flew out of the cave.
12
2
Step one: Count ten bats.
18
11
14
3
15
13
4
16
17
19
20
21
5
22
6
23
7
8
How many flew out?
9
10
____________
Tens
Ones
How many bats did you count?
Tens
Ones
Write the number here:___________________________