Multiplying and Dividing Decimals Word Problems By:Ricky Zhang

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It represents a part of a whole number, using a dot (.) to separate the whole number from the fractional part.

Front

How do you multiply decimals?

Back

To multiply decimals, multiply the numbers as if they were whole numbers. Then, count the total number of decimal places in both numbers and place the decimal point in the product accordingly.

Front

What is the process for dividing decimals?

Back

To divide decimals, move the decimal point in the divisor to the right until it is a whole number. Move the decimal point in the dividend the same number of places. Then, divide as usual.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator (top number) by the denominator (bottom number).

Front

What is the importance of estimating in decimal operations?

Back

Estimating helps to quickly determine if an answer is reasonable and can simplify calculations.

Front

If a prize costs $0.32, how do you find out how many prizes you can buy with $96?

Back

Divide $96 by $0.32. The answer is 300 prizes.

Front

How do you share costs equally among friends?

Back

To share costs equally, divide the total cost by the number of friends.

Front

What is the formula for finding the total mass of a solution?

Back

Total mass = Density × Volume. For example, if the density is 4.8 g/mL and the volume is 10 mL, the total mass is 48 grams.

Front

How do you determine how many items can be made from a given amount of material?

Back

Divide the total amount of material by the amount needed for one item.

Front

What is the significance of the decimal point in multiplication and division?

Back

The decimal point indicates the value of the number. Its position affects the size of the number and must be placed correctly in the final answer.