Understanding Addition and Place Value

The video tutorial teaches how to add numbers within 100 using base ten blocks. It reviews base ten blocks and place value, demonstrating the addition of numbers like 23 and 45, 56 and 35, and 47 and 28. The tutorial emphasizes understanding the value of each digit and using partial sums to find the total.

What is the primary method taught in this lesson for adding numbers within 100?

• Using a number line

• Using base ten blocks

• Using a calculator

• Using mental math

In the number 267, what is the value of the digit 6?

• 600

• 6

• 60

• 6000

When adding 23 and 45, what is the sum of the tens?

• 80

• 60

• 40

• 20

What is the final sum of 23 and 45?

• 58

• 78

• 88

• 68

In the number 56, what is the value of the digit 5?

• 5000

• 500

• 50

• 5

What is the sum of the ones when adding 56 and 35?

• 9

• 10

• 12

• 11

What is the final sum of 56 and 35?

• 81

• 101

• 91

• 111

When adding 47 and 28, what is the sum of the tens?

• 80

• 70

• 60

• 50

What is the sum of the ones when adding 47 and 28?

• 13

• 14

• 16

• 15

What is the final sum of 47 and 28?

• 95

• 65

• 75

• 85