Count the longs:

There is 1 long (each long represents 10 units).
So, 1 long = 10 units.
Count the units:

There are 3 single units.
Add them together:

10 (from the long) + 3 (from the units) = 13.

Supplemental Knowledge:

Base-ten blocks are a mathematical manipulative used to teach basic arithmetic concepts such as place value, addition, subtraction, and more. They come in different shapes representing different values:

Units (Ones): Small cubes that represent the number 1.
Longs (Tens): Rods made up of 10 unit cubes, representing the number 10.
Flats (Hundreds): Squares made up of 100 unit cubes, representing the number 100.
Blocks (Thousands): Cubes made up of 1,000 unit cubes, representing the number 1,000.

In your image:

The tall rod represents a "long," which is equivalent to 10 units.
The shorter rod represents individual "units."

Praktikal na Kaalaman:

Understanding base-ten blocks can provide invaluable assistance in everyday situations involving counting and basic arithmetic, such as:

Shopping: when making purchases at stores and tallying their costs, shoppers often group items in groups of ten for ease of calculation. So if you have 10 $1 coins and 3 additional ones worth $1 each, this makes for quick recognition that there is $13 in total cost.

Classroom Learning: Teachers often utilize base-ten blocks as visual aids when teaching addition and subtraction to young children, making abstract concepts more tangible and understandable for them.

These practical examples demonstrate how foundational math skills can be developed using basic tools, like base-ten blocks.

At UpStudy—we believe in making math fun & accessible! For more insights into foundational topics like base-ten representation—explore our live tutor question bank & AI-powered problem-solving services!