Multiply and Divide Decimals and Fractions No Negatives

Multiply Decimals

*1 decimal place.

*10th place.

3 x 0.2 =

• 6

• 0.6

• 0.06

• 0.006

Multiply Decimals

*2 decimal places

*100th place

3 x 0.02 =

• 6

• 0.6

• 0.06

• 0.006

Multiply Decimals

*1 decimal place.

*tenths place.

3 x 0.3 =

• 9

• 0.9

• 0.09

• 0.009

Multiply Decimals

*2 decimal places.

*hundredths place.

3 x 0.03 =

• 9

• 0.9

• 0.09

• 0.009

A baker wants to slice a cake that is 12/15 feet long into pieces that are 1/16 pieces. Which expression can also be used to calculate the number of pieces that can be cut from the cake?

• 12/15 ⋅ 16/1

• 12/1 ⋅ 16/15

• 15/12 ⋅ 1/16

• 15/12 ⋅ 16/1

Answer explanation

Hopefully you realized you you are taking part of a cake and cutting it in to more pieces...that's division!

Remember the division rule! Keep Change Flip!

Emily took 132.4 hours to train for her marathon. Jessica is going to run the same marathon but she trained 1.45 times as long as Emily. Based on this information, which statement is true?

• Jessica trained longer because 132.4 + 1.45 = 133.85

• Jessica trained longer because 132.4 + 1.45 = 146.9

• Jessica trained longer because 132.4 x 1.45 = 191.98

• Jessica trained longer because 132.4 x 1.45 = 72.820

Answer explanation

TIMES is the key word! You would multiply on this problem.

Remember! You don't have to line-up the decimals when you are multiplying, but you do have to move your decimal to the left for each number standing behind a decimal in the original problem.

Show work where you have corrected your error!

Multiply Decimals

2 x 0.4 =

• 8

• 0.8

• 0.08

• 0.008

Multiply Decimals

2 x 0.04 =

• 8

• 0.8

• 0.08

• 0.008

Multiply Decimals

5 x 0.3 =

• 15

• 1.5

• 0.15

• 0.015

Multiply Decimals

5 x 0.03 =

• 15

• 1.5

• 0.15

• 0.015