Mastering 10 More and 10 Less: A Place Value Math Lesson

The video tutorial begins with a warm-up exercise involving counting in 10s and counting backwards. It then explains how to add 10 to a number by focusing on the tens column, using examples like 143 to 153 and 269 to 279. The tutorial continues with subtracting 10 from numbers, again focusing on the tens column, with examples such as 185 to 175 and 438 to 428. Finally, it presents a problem-solving exercise to find the middle number between two given amounts, 102 and 122, concluding that the middle number is 112.

What is the new number when you add 10 to 143?

What happens to the tens column when you add 10 to a number?

When we take away 10 from 185, what is the new number?

Explain how to find the new number when subtracting 10 from 438.

What number should be in the middle of 102 and 122?