Exploring 2nd Grade Math Concepts

The video tutorial reviews subtraction problems from the previous week and introduces the concept of borrowing in subtraction. It explains borrowing through a poem and provides detailed examples and practice problems. The tutorial concludes with a review of the practice problems and their solutions.

What is the first step in the process of subtraction when the top number is larger?

• Leave the numbers as they are.

• Add the numbers instead.

• Borrow from the next value.

• Directly subtract the numbers.

Tags

CCSS.7.NS.A.1C

How do you know when to stop subtracting in a problem?

• When you've borrowed from all columns.

• When the top number is bigger.

• When you reach a zero.

• When the bottom number is bigger.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What should you do when the bottom number is larger than the top number in a column?

• Borrow 10 from the next column.

• Just guess the answer.

• Move to the next column without doing anything.

• Multiply the numbers.

Tags

CCSS.2.NBT.B.7

According to the poem, what do you do if there's 'more on the floor'?

• Add 10 to the top number.

• Simply subtract the numbers.

• Go next door and get 10 more.

• Stop and do nothing.

Tags

CCSS.RI.7.3

CCSS.RI.7.5

CCSS.RI.8.3

CCSS.RI.8.5

CCSS.RI.9-10.5

In the subtraction problem 99 - 1, why is there no need to borrow?

• Because it's an addition problem.

• Because 9 is larger than 1.

• Because the numbers are the same.

• Because 1 is larger than 9.

Tags

CCSS.2.NBT.B.5

In the context of the poem, what does 'numbers the same, zeroes the game' imply?

• If the numbers are the same, the answer is always 10.

• If the numbers are the same, subtract as usual.

• If the numbers are the same, put a zero in the ones column.

• If the numbers are the same, borrow 10.

Tags

CCSS.RI.7.3

CCSS.RI.8.3

CCSS.RI.8.5

CCSS.RI.9-10.3

CCSS.RI.9-10.5

What does borrowing allow you to do in subtraction?

• Add numbers instead of subtracting.

• Multiply the numbers for a quicker answer.

• Ignore the larger bottom number.

• Subtract a larger number from a smaller one.

Tags

CCSS.7.NS.A.1C

When you borrow, what happens to the number you borrowed from?

• It increases by 10.

• It becomes zero.

• It remains the same.

• It decreases by 1.

Tags

CCSS.2.NBT.B.7

What is the result of 44 - 25 using the borrowing method?

• 19

• 21

• 20

• 18

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the final answer for the subtraction problem 96 - 49?

• 47

• 45

• 50

• 48

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2