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Instruction 1-6

Count, Read and Write 1-100 | Count, Read, and Write Whole Numbers 100 -1,000 | Represent Numbers (1-1,000) in Different Forms | Compare Numbers (1-1,000) | Equivalent Forms of the Same Number | Count and Group objects in Ones and Tens | Summary
COUNT AND GROUP OBJECTS IN ONES AND TENS
CA GR1 NS 1.4

Example 1

Katie is watching deer and would like to count them.

katie Deers

She decides to group them.

One big group has 10 deer:

10 Deer


Eight small groups have one deer:

10 Deer
10 Deer
10 Deer
10 Deer
10 Deer
10 Deer
10 Deer
10 Deer

 

She adds the groups:

 

Addition

She sees 18 deer.

Example 2

Joe wants to count rabbits. He divides them in groups of tens and ones.

How many rabbits are there?

Let’s create groups of tens:

Now let’s create groups of ones:

We have two groups of 10 and seven groups of one:

We can also say:

10 + 10 + 1 + 1+ 1 + 1+ 1 + 1 +1 = 27

There are 27 rabbits.

Worksheet 1 Grouping objects in ones and tens.

Worksheet 2 Grouping objects in ones and tens.

Worksheet 3 Grouping objects in ones and tens.

Worksheet 4 Numbers represented by groups of tens and ones. (1-100).

Worksheet 5 Numbers represented by groups of tens and ones. (1-100).