Adding Two-Digit Numbers with Base 10 Blocks

In this video, Mr. J explains how to add two-digit numbers using base 10 blocks without regrouping. The video covers two examples: adding 32 and 14, and adding 57 and 42. Mr. J demonstrates how to align the numbers by their ones and tens places, and how to visualize the addition process using base 10 blocks. The video emphasizes the importance of starting with the ones place and then moving to the tens place. By the end, viewers should have a clear understanding of how to use base 10 blocks to add two-digit numbers effectively.

What is the main topic covered in this video?

• Subtracting two-digit numbers

• Adding two-digit numbers with regrouping

• Adding two-digit numbers using base 10 blocks without regrouping

• Multiplying two-digit numbers

In the first example, what is the sum of the ones place in 32 and 14?

• 6

• 7

• 5

• 8

How many groups of ten are there in the number 32?

• 2

• 3

• 4

• 5

What is the final result of adding 32 and 14?

• 44

• 48

• 50

• 46

In the second example, what is the sum of the ones place in 57 and 42?

• 10

• 8

• 11

• 9

How many groups of ten are there in the number 57?

• 7

• 4

• 5

• 6

What is the final result of adding 57 and 42?

• 97

• 99

• 98

• 100

What is the value of the tens place in the number 99?

• 110

• 100

• 90

• 80

What is the purpose of using base 10 blocks in addition?

• To make subtraction easier

• To divide numbers

• To visualize multiplication

• To help visualize addition problems