Mastering Decimal Operations and Powers of 10

What happens to the decimal point when multiplying by powers of ten?

• It stays in the same place

• It moves to the right

• It disappears

• It moves to the left

Tags

CCSS.5.NBT.A.2

If you multiply 2.51 by 10 to the second power, where does the decimal point move?

• It doesn't move

• Three places to the right

• Two places to the right

• Two places to the left

Tags

CCSS.5.NBT.A.2

How many places do you move the decimal point when multiplying by 10 to the power of 2?

• Two places

• One place

• Four places

• Three places

Tags

CCSS.5.NBT.A.2

What is the result of multiplying 2.51 by 10 to the third power?

• 0.251

• 2510

• 25.1

• 2.510

Tags

CCSS.5.NBT.A.2

When dividing by powers of ten, in which direction does the decimal point move?

• It becomes a comma

• It doesn't move

• To the left

• To the right

Tags

CCSS.5.NBT.A.2

What fills the empty space when moving the decimal point in multiplication or division by powers of ten?

• A decimal point

• The number itself

• A one

• A zero

Tags

CCSS.5.NBT.A.2

Dividing 12.5 by 10 to the second power gives us:

• 12.5

• 0.125

• 125

• 1.25

Tags

CCSS.5.NBT.A.2

What is the result of dividing 126 by 10 to the third power?

• 0.126

• 1260

• 12.6

• 1.26

Tags

CCSS.5.NBT.A.2

If you divide a number by 10 to the power of 3, how many places should the decimal point move?

• Three places

• Two places

• One place

• It doesn't move

Tags

CCSS.5.NBT.A.2

Why can't the shortcut of moving the decimal point be used with numbers other than powers of ten?

• It's too complicated

• It only works with whole numbers

• It can cause errors

• It only works with powers of ten

Tags

CCSS.5.NBT.A.2