Exploring Addition of Ones and Tens

This video tutorial teaches how to add two-digit numbers by breaking them into ones and tens. It provides multiple examples, starting with using physical materials to visualize the addition process and then moving to mental math. The tutorial covers adding numbers like 23 and 32, 36 and 11, 27 and 12, and 72 and 23, emphasizing the importance of understanding the composition of numbers in terms of tens and ones.

What is the sum of 23 and 32?

• 45

• 75

• 65

• 55

When adding 23 and 32, what is the sum of the ones?

• 5

• 9

• 7

• 3

When adding two-digit numbers, what is the first step according to the video?

• Subtract the smaller number from the larger one

• Add the tens

• Multiply the numbers

• Add the ones

What is the result of adding 36 and 11?

• 47

• 57

• 67

• 37

In the addition of 36 and 11, how many tens are there in the final sum?

• 5

• 4

• 6

• 3

What is the sum of 27 and 12?

• 29

• 49

• 59

• 39

When adding 27 and 12, what is the sum of the ones?

• 7

• 5

• 11

• 9

What is the final sum when adding 72 and 23?

• 105

• 95

• 75

• 85

In the addition of 72 and 23, what is the sum of the tens?

• 70

• 90

• 110

• 50

How many ones are there when adding 72 and 23?

• 3

• 7

• 5

• 9