Multiplying and Dividing Decimals Word Problems

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form, where the denominator is a power of ten, often used to represent numbers that are not whole.

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

How do you divide decimals?

Back

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

Front

What is the cost per item?

Back

The cost per item is found by dividing the total cost by the number of items.

Front

If Jamie bought 4 pounds of sugar for $2.56, how do you find the cost per pound?

Back

Divide the total cost ($2.56) by the number of pounds (4). The cost per pound is $0.64.

Front

What operation would you use to find the total cost of multiple items?

Back

Multiplication.

Front

If Merkel bought 10 cups at $1.25 each, how do you calculate the total cost?

Back

Multiply the cost per cup ($1.25) by the number of cups (10). The total cost is $12.50.

Front

What is the formula for finding the contribution per student for a trip?

Back

Divide the total cost of the trip by the number of students.

Front

If the total cost of a trip is $802.50 for 30 students, how much does each student contribute?

Back

Each student contributes $26.75.

Front

What is the relationship between multiplication and division?

Back

Multiplication is repeated addition, while division is the process of determining how many times one number is contained within another.