Addition Using Base-Ten Blocks (Example)

The video tutorial demonstrates how to add 225 and 317 using base 10 blocks. It begins by representing each number with units, rods, and flats corresponding to their place values. The tutorial then shows how to combine these representations, regrouping units into rods and summing the components to arrive at the final result of 542.

What is the first step in solving the addition problem of 225 + 317?

• Subtract the smaller number from the larger one.

• Use base 10 blocks to represent the numbers.

• Directly add the numbers.

• Multiply the numbers.

How many units are used to represent the number 225?

• 10 units

• 7 units

• 5 units

• 2 units

In the number 317, how many rods are used to represent the tens place?

• 1 rod

• 4 rods

• 2 rods

• 3 rods

What happens when you combine 5 units with 7 units?

• You get 20 units.

• You get 15 units.

• You get 10 units.

• You get 12 units.

What is the final sum of 225 and 317?

• 562

• 532

• 552

• 542