🧮 Number Sense K-2

Tally marks are a way to count and keep track of numbers using lines. Each group of five lines is counted as one group.

You can represent the number 8 with tally marks as follows: |||| ||||.

The number 13 can be represented by 13 objects, like 13 apples or 13 stars.

You can represent the number 9 with tally marks as follows: |||| |||| |.

The number 4 can be represented by 4 objects, like 4 balloons or 4 cars.

There are 17 tally marks in the picture.

Each group of five tally marks counts as 5.

You count tally marks by grouping them in sets of five and then adding the remaining marks.

The difference between 8 and 4 is 4.

You can show the number 10 with 10 objects, like 10 fingers or 10 blocks.