Second Grade Math Madness

Objective: I can add multi-digit numbers with and without

regrouping.

Second Grade Math Madness Bellwork

•1. Look at the number 139. What digit is in the ones place?

•2. Look at the number 456. What digit is in the tens place?

•3. What is the sum of 5 + 6 + 7?

•4. What is the area of the rectangle?

When adding and subtracting numbers...

We have to know...

PLACE VALUE!

Let’s Listen

http://www.youtube.com/watch?v=5W47G-h7myY

Line Up the Place Value!

34 45+

97

Second Grade Math Madness Bellwork

1. Can you write 321 in expanded notation.

2. 567, what digit is in the tens place?

3. 23 + 77 =?

Second Grade Math Madness

Objective: I can add multi-digit numbers with and without

regrouping.

When adding and subtracting numbers...

We have to know...

PLACE VALUE!

Let’s Listen

http://www.youtube.com/watch?v=5W47G-h7myY

Line Up the Place Value!

42 37+

97

But What If..When I add my ones, it is bigger than 10?

http://www.youtube.com/watch?v=TALjvm0hhLs

67 25+

29

1Regrouping!!

Let’s Practice Some (with regrouping)

46 + 35

67 + 24

179 + 45

Let’s Wrap it UP...With another song!

http://www.youtube.com/watch?v=QAL8XxyGVow