Subtraction Strategies and Techniques

In this video, Teacher Angel introduces subtraction without regrouping, focusing on subtracting ones, tens, and both from numbers. Various methods are demonstrated, including counting back, using base 10 blocks, and number bonds. The session concludes with practice exercises to reinforce learning.

What is the main focus of today's session?

• Division

• Multiplication

• Subtraction without regrouping

• Addition with regrouping

Which of the following is a learning goal for today's session?

• Subtract hundreds from a number

• Subtract ones and tens from a number

• Add tens to a number

• Multiply numbers

How do you subtract ones from a number using the counting back method?

• Count forward from the number

• Count backward from the number

• Add the numbers together

• Multiply the numbers

What is the result of 28 minus 3 using the counting back method?

• 31

• 25

• 26

• 24

In the base 10 blocks method, what is the first step when subtracting ones?

• Subtract the ones

• Multiply the ones

• Subtract the tens

• Add the ones

Using number bonds, how can 28 be broken down for subtraction?

• 28 and 0

• 20 and 8

• 30 and 8

• 10 and 18

What is the difference between 36 and 4 using the counting back method?

• 32

• 30

• 34

• 28

When subtracting tens from a number, what is the first step in the base 10 blocks method?

• Subtract the ones

• Subtract the tens

• Add the tens

• Multiply the tens

What is the result of 45 minus 20 using the counting back method?

• 20

• 35

• 25

• 15

In the base 10 blocks method, what is the result of 58 minus 30?

• 28

• 32

• 30

• 26