Exploring Go Math Concepts for 2nd Graders

This video tutorial covers Go Math Lesson 2.2, focusing on exploring three-digit numbers. It demonstrates how to circle tens to make 100, count and write numbers in different ways, and break down thirteen tens into hundreds and tens. The lesson also explains how to understand the number 130 by counting tens, providing strategies for verifying calculations.

What is the main focus of Go Math Lesson 2.2?

• Learning about fractions

• Understanding prime numbers

• Exploring three-digit numbers

• Studying geometry

How many tens are grouped to make 100?

• 15 tens

• 10 tens

• 5 tens

• 20 tens

Tags

CCSS.2.NBT.A.1B

What is the total number of tens identified after grouping?

• 14 tens

• 10 tens

• 12 tens

• 13 tens

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

How many hundreds are formed from the tens?

• Four hundreds

• Two hundreds

• One hundred

• Three hundreds

Tags

CCSS.2.NBT.A.1B

How many tens are left over after forming the hundreds?

• Two tens

• One ten

• Three tens

• Four tens

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

What visual method is suggested to understand the tens place?

• Placing dots above each number

• Using different colors for each ten

• Drawing circles around the numbers

• Adding a zero behind the numbers

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

What should you do if unsure about the number of tens?

• Guess the number

• Ask a friend

• Check the textbook

• Count by tens

Tags

CCSS.1.NBT.A.1

What is the value of thirteen tens?

• 100

• 120

• 130

• 140

Tags

CCSS.2.NBT.A.1B

How can you double-check your work when counting tens?

• Using a calculator

• All of the above

• Repeating the count

• Writing down each step

Tags

CCSS.1.NBT.A.1

What is the value of one hundred and three tens?

• 103

• 113

• 133

• 130

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C