Multiplying Decimals

What is a decimal?

• A fraction whose denominator is a power of ten, represented with a decimal point.

• A whole number that can be divided by two.

• A number that represents a part of a whole without a decimal point.

• A mathematical operation involving addition and subtraction.

How do you multiply decimals?

• Multiply the numbers as if they were whole numbers, then count the total number of decimal places and place the decimal point in the product accordingly.

• Add the decimal places of both numbers and place the decimal point in the sum.

• Multiply the numbers, then subtract the total number of decimal places from the product.

• Divide the numbers as if they were whole numbers, then adjust the decimal point based on the larger number.

If you multiply a decimal by 10, what happens to the decimal point?

• The decimal point moves one place to the left.

• The decimal point moves one place to the right.

• The decimal point stays in the same place.

• The decimal point moves two places to the right.

How do you find the total distance if a bike is ridden multiple times around a track?

• Add the distance of one lap to the number of laps.

• Multiply the distance of one lap by the number of laps.

• Divide the total distance by the number of laps.

• Subtract the distance of one lap from the total distance.

What is 0.75 x 0.4?

• 0.30

• 0.25

• 0.35

• 0.40

What is 1.2 x 2.1?

• 2.12

• 2.52

• 2.32

• 2.42

What is the product of 0.1 and 0.2?

• 0.01

• 0.02

• 0.03

• 0.04

What is the product of 7.13 and 5.5?

• 35.50

• 39.215

• 40.00

• 37.75

If you multiply a decimal by 0.1, what happens to the decimal point?

• The decimal point moves one place to the left.

• The decimal point moves one place to the right.

• The decimal point stays in the same place.

• The decimal point moves two places to the left.

What is 3.5 x 2.0?

• 6.5

• 7.0

• 8.0

• 5.5