Exploring Addition and Subtraction Concepts

The video tutorial explains how adding or subtracting 1 or 10 to the number 25 affects its digits. Adding or subtracting 1 changes the ones digit, while adding or subtracting 10 changes the tens digit. The tutorial emphasizes that the other digit remains unchanged in each case.

What is the result when you add 1 to 25?

• 26

• 25

• 27

• 24

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

If you increase a number by 1, which digit changes?

• Ones digit

• Hundreds digit

• Tens digit

• None

Tags

CCSS.1.NBT.C.5

What happens to the tens digit when you add 1 to 25?

• Does not change

• Becomes zero

• Increases by 1

• Decreases by 1

Tags

CCSS.1.NBT.C.5

What is the result when you subtract 1 from 25?

• 25

• 24

• 23

• 26

Tags

CCSS.2.OA.A.1

What digit changes when 10 is added to 25?

• Ones digit

• Hundreds digit

• Tens digit

• None

Tags

CCSS.1.NBT.C.5

When subtracting 10 from 25, what is the new value?

• 25

• 15

• 35

• 5

Tags

CCSS.1.NBT.C.5

After subtracting 10 from 25, which digit remains unchanged?

• Tens digit

• Ones digit

• Hundreds digit

• All digits

Tags

CCSS.1.NBT.C.5