Multiplying Decimals

What is a decimal?

• A whole number represented with a comma.

• A fraction whose denominator is a power of ten, represented with a dot (decimal point) to separate the whole number from the fractional part.

• A type of integer that includes negative values.

• A mathematical operation involving addition and subtraction.

How do you check your work after multiplying decimals?

• By redoing the multiplication from scratch.

• By estimating the product and ensuring your answer is close to that estimate.

• By using a calculator to verify the result.

• By comparing your answer with a friend's answer.

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 and then subtract the total number of decimal places from the product.

• Divide the numbers as if they were whole numbers, then place the decimal point in the quotient accordingly.

What is the product of 5.2 and 4.6?

• 20.56

• 22.34

• 23.92

• 24.12

What is the product of 19.1 and 8.5?

• 150.25

• 162.35

• 175.15

• 140.50

What is the product of 2.8 and 3.7?

• 10.36

• 9.96

• 11.12

• 10.24

What does it mean to round a decimal?

• Adjusting its value to make it simpler while keeping it close to the original value, often to a specific place value.

• Changing a decimal to a whole number by removing the decimal part.

• Increasing the value of a decimal to the next whole number.

• Decreasing the value of a decimal to the nearest tenth.

What is the place value of the digit 3 in 0.63?

• tenths

• hundredths

• thousandths

• ones

What is the importance of the decimal point in multiplication?

• It indicates the value of the digits in a decimal number, and its placement affects the final product when multiplying.

• It is used to separate whole numbers from fractions in multiplication.

• It has no effect on the multiplication process whatsoever.

• It is only important in addition and subtraction, not in multiplication.

What is the product of 1.2 and 3.5?

• 3.5

• 4.2

• 5.0

• 6.0