Understanding Base Ten Addition

The video tutorial demonstrates how to add two two-digit numbers, 65 and 27, using base ten blocks. It begins by constructing the numbers with ten rods and ones, then combines and regroups the ones into tens. Finally, it adds all the tens to find the sum, which is 92.

What is the purpose of using base ten blocks in addition?

• To visually represent and simplify the addition process

• To confuse the students

• To make the numbers look colorful

• To make the numbers larger

How many ten rods are used to represent the number 60?

• 5

• 8

• 6

• 7

How many single units are used to complete the number 65?

• 3

• 4

• 5

• 6

What is the first step in building the number 27 using base ten blocks?

• Adding the ones

• Building the tens

• Combining the numbers

• Subtracting the tens

How many single units are used to represent the number 7?

• 8

• 7

• 6

• 5

What do you do after combining the ones from both numbers?

• Regroup them into a ten rod

• Ignore them

• Subtract them

• Add more ones

How many ones are left after regrouping in the example?

• 2

• 1

• 3

• 4

What is the total number of tens after adding them all together?

• 10

• 9

• 8

• 7

What is the final sum of 65 and 27 using base ten blocks?

• 102

• 92

• 112

• 82

What is the main advantage of using base ten blocks for addition?

• It is more challenging

• It provides a visual aid for understanding

• It is less accurate

• It makes the process faster