Addition Base Ten Blocks

Front

What are base ten blocks?

Back

Base ten blocks are tools used to help understand numbers and place value. They represent units (ones), rods (tens), and flats (hundreds).

Front

What does a unit block represent?

Back

A unit block represents the number 1.

Front

What does a rod block represent?

Back

A rod block represents the number 10.

Front

What does a flat block represent?

Back

A flat block represents the number 100.

Front

How do you add two unit blocks?

Back

You simply count the total number of unit blocks.

Front

How do you add a unit block and a rod block?

Back

You add 1 (from the unit block) to 10 (from the rod block) to get 11.

Front

What is the sum of 2 rods?

Back

The sum of 2 rods is 20.

Front

If you have 3 unit blocks and 4 unit blocks, what is the total?

Back

The total is 7 unit blocks.

Front

What is the sum of 1 flat and 2 rods?

Back

The sum is 120 (100 from the flat and 20 from the rods).

Front

How do you represent the number 23 using base ten blocks?

Back

You can use 2 rods (20) and 3 unit blocks (3).