Adding and Breaking Down Numbers

In this video, second-grade students learn to add several two-digit numbers using different strategies. The lesson begins with a word problem involving a treasure hunt, where students must find a secret code by adding steps. The teacher explains how to break numbers into tens and ones, and demonstrates adding these parts to find the total. Alternative methods for adding three numbers are explored, including finding groups of ten. An example problem is solved using these strategies. The video concludes with encouragement to maintain a growth mindset and embrace challenges.

What is the main focus of this lesson?

• Dividing two-digit numbers

• Multiplying single-digit numbers

• Adding several two-digit numbers

• Subtracting two-digit numbers

What is the first step in solving Gia's treasure hunt problem?

• Drawing a map of the treasure hunt

• Breaking down numbers into tens and ones

• Finding the total number of steps

• Guessing the secret code

How do you break down the number 36 into tens and ones?

• 30 and 6

• 36 and 0

• 3 and 6

• 6 and 30

What is the sum of the tens in the numbers 36, 28, and 42?

• 100

• 80

• 60

• 90

What is the total number of steps in Gia's treasure hunt?

• 96

• 106

• 116

• 126

What is one method to simplify adding three numbers?

• Multiply the numbers

• Subtract the smallest number

• Make groups of ten

• Add the largest number first

In the example problem, which two numbers are added first to make a group of ten?

• 21 and 37

• 37 and 63

• 21 and 63

• 37 and 21

What is the final sum of the numbers 37, 21, and 63?

• 111

• 131

• 121

• 141

Why is it important to maintain a growth mindset?

• It encourages trying new strategies

• It guarantees correct answers

• It helps you avoid mistakes

• It makes learning unnecessary