Multiplying and Dividing Decimals in Word Problems 2024 (Mod)

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

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, then move the decimal point in the dividend the same number of places. Divide as usual.

Front

How do you find the cost per item when given total cost and quantity?

Back

Divide the total cost by the number of items. For example, if 14 boxes cost $91.00, the cost per box is $91.00 ÷ 14 = $6.50.

Front

What is the formula to find the total cost when given price per item and quantity?

Back

Total Cost = Price per Item × Quantity. For example, if peaches cost $2.50 per pound and you buy 3.25 pounds, the total cost is $2.50 × 3.25.

Front

How do you calculate the share of cost among friends?

Back

To find the share of cost, divide the total cost by the number of friends. For example, if 12 friends pay $83.40, each pays $83.40 ÷ 12.

Front

What does it mean to have a coupon for a discount?

Back

A coupon provides a discount on the total price. For example, if you have a $1.50 coupon on a $6.63 purchase, you pay $6.63 - $1.50.

Front

How do you calculate the weight of one item when given the total weight and quantity?

Back

Divide the total weight by the number of items. For example, if 23 packets weigh $37.95, the weight of each packet is $37.95 ÷ 23.

Front

What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. If a × b = c, then c ÷ b = a and c ÷ a = b.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator. For example, 1/4 = 0.25.