Grade 2 Math: Addition Solution

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In this lesson, students learn how to add the numbers 57 and 29 by stacking them to align the tens and ones places. They first add the ones place, carrying over any excess to the tens place, and then combine the tens to arrive at the final answer of 86. The lesson emphasizes the fun and simplicity of addition through visual organization and practice.
  1. What do we do first when we want to add two numbers together?
  2. What happens when we add the ones and get a number bigger than 10?
  3. Can you think of another pair of numbers to add using stacking? What are they?

Fun with Addition: Solving 57 + 29

Let’s Learn to Add!

Today, we’re going to learn how to add two numbers, 57 and 29, in a fun and easy way. We’ll do this by stacking the numbers on top of each other, just like building blocks!

Stacking the Numbers

First, we write the numbers so that the tens and ones line up nicely. The tens are on the left, and the ones are on the right. It looks like this:

57
+29

Adding the Ones

Let’s start with the ones place. We have 7 and 9. When we add 7 and 9, we get 16. The number 16 has 6 ones, so we write 6 in the ones place. But wait, there’s a 1 left over because 16 is more than 10! We carry this 1 over to the tens place.

Adding the Tens

Now, let’s add the tens place. We have 1 (the one we carried over), 5, and 2. First, we add 1 and 5, which equals 6. Then, we add 2 more, making it 8. So, we write 8 in the tens place.

The Final Answer

And there you have it! When we add 57 and 29, we get 86. Isn’t that fun and easy?

Practice Makes Perfect

Try practicing with other numbers to get even better at addition. Remember, stacking numbers and carrying over when needed makes adding big numbers a breeze!

  • Can you think of a time when you had to add things together, like toys or snacks? How did you figure out the total?
  • Why do you think it’s important to line up the numbers correctly when we add them? What might happen if we don’t?
  • Have you ever helped someone else with adding numbers? How did you explain it to them, and what did you enjoy about helping?
  1. Number Building Blocks: Use building blocks or LEGO pieces to represent the numbers in the addition problem. Assign a color to the tens and another to the ones. For example, use blue blocks for tens and red blocks for ones. Stack the blocks to represent 57 and 29, then combine them to visualize the addition process. How many blocks do you have in total?

  2. Number Line Hop: Draw a number line on the ground using chalk or tape. Start at 57 and hop forward 29 steps. Count each hop aloud to see where you land. What number do you reach? This activity helps you understand addition as moving forward on a number line.

  3. Everyday Addition Hunt: Look around your home or classroom for items you can count and add together. For example, count the number of apples and oranges in a fruit bowl. Write down the numbers and stack them to add, just like you learned. What is the total number of fruits?

Sure! Here’s a sanitized version of the transcript:

[Music] Let’s solve the addition problem 57 plus 29 by stacking the numbers so that the tens and ones are lined up. The tens place is on the left and the ones place is on the right.

We start solving the addition equation by adding the numbers in the ones place: 7 plus 9 equals 16. In the number 16, there are 6 ones, which we write in the ones place. The 1 in 16 represents 10, so we carry the 1 over to the tens place and write it above the 5.

Now we add the numbers in the tens place: 1 plus 5 equals 6. We need to add 2 more, which gives us 8 in the tens place.

The answer we found is 86. Therefore, 57 plus 29 equals 86.

[Music]

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