Decimal operations

What is the first step when multiplying decimals?

• Line up the numbers

• Line up the decimals

• Multiply like normal

• Move the decimal

Tags

CCSS.6.NS.B.3

Once the numbers are lined up in a multiplication problem, how do I know where my decimal is placed in my answer?

• Bring the decimal straight down
• There is no decimal
• Count how many numbers are behind all decimals in the problem
• Move the decimal 2 spaces from the front

Tags

CCSS.6.NS.B.3

12.3 +13.45

• 14.68
• 25.75
• 1.15
• 25.48

Tags

CCSS.6.NS.B.3

7.83 x 1.2

• 9.396
• 93.96
• 7.86
• 2.349

Tags

CCSS.6.NS.B.3

4.32 ÷ 9

• 0.38
• 3.18
• 4.8
• 0.48

Tags

CCSS.5.NBT.B.7

14.56 ÷ 1.3

• 112
• 1.12
• 11.2
• 12

Tags

CCSS.6.NS.B.3

What is the first step when adding and subtracting decimals?

• Line up the numbers
• Line up the decimals
• Add or subtract like normal
• Add in placeholders

Tags

CCSS.5.NBT.B.7

In a division problem when there is a decimal on the inside (dividend) but not on the outside (divisor), what do I do first?

• ignore the decimal

• move the decimal straight up into the answer (quotient)

• add a decimal

• erase the decimal

If there is a decimal on the outside (divisor), what do I do first?

• slide slide (change it to a whole number)

• ignore the decimal

• erase the decimal

• move it to the inside (dividend)

Tags

CCSS.5.NBT.B.7

If you move the decimal on the outside (divisor), what do you do to the inside (dividend)?

• nothing

• ignore the decimal

• erase the decimal

• The same thing you did to the outside

Tags

CCSS.5.NBT.B.6

CCSS.6.NS.B.2