Decimal Operations
56 - 0.218
What is 55.782?
Jane buys $9.75 worth of gummy bears. If she bought 3 pounds, how much do they cost per pound?
What is $3.25 per pounds?
3 2/3 times 2 3/4
What is 121/12 or 10 1/12
A recipe requires 5/6 of a cup of sugar. If Mrs. Marina is going to make one- half of the recipe, how much sugar does she need?
What is 5/12 cups of sugar?
For which decimal operation(s) (addition, subtraction, multiplication, division) do you need to line up the decimal points?
adding and subtracting
1.93 x 0.9
What is 1.737?
A jar of olives is priced at $15.18 per 6.6 ounces. What is the price of one ounce of olives?
$2.30 per ounce
1/2 divide 1 1/4
What is 2/5?
Maria ate 1/3 of a pie. Her sister Rebecca ate 1/5 of a pie. How much of the pie was left?
What is 7/15 of a pie?
For which mixed number operation(s) (addition, subtraction, multiplication, division) do you need to get common denominators?
adding and subtracting
2,730 divided by 1.3
What is 2,100?
Maryann is making a bracelet at a camp using beads that are 1.64 cm long. What will be the length of her bracelet if she uses 19 beads?
What is 31.16 cm long?
1 1/8 - 3/4
What is 3/8?
A piece of thread is 11/12 inches long. Jenny needs to cut the thread into 1/6 inch segments. How many full segments can she cut?
What are 5 segments?
(answer 5 and 1/2)
For which decimal operation(s) (addition, subtraction, multiplication, division) do you need to count the number of digits after the decimal points?
multiplications
807.3 divided by 9
What is 89.7?
In a relay race the team had a total time of 5.67 minutes. Here are 3 of the runners times: 1.2, 2.09, 1.78. What is the fourth runner's time?
0.6 minutes
1 8/9 + 2 6/11
What is
4 43/99 or 439/99
?
A 15-pound bag of sugar is being split up into containers that hold 7/8 of a pound. How many containers of sugar with the 15-pound bag fill?
What is 17 containers?
(answer: 17 and 1/7)
For which mixed number operation(s) (addition, subtraction, multiplication, division) do you need to convert mixed numbers into improper fractions as a first step?
multiplication and division
1.456+3.4 x 6.7
What is 24.236?
On Saturday morning, Alonso went to the farmer's market. He bought 3 eggplants for $5.79 each. He paid with a twenty dollar bill. What change did he get back?
What is $2.63?
8-2 2/3+4 3/4
What is
121/12 or 10 1/12
?
Amanda uses 1/3 cup of milk each time she makes a batch of pancakes. How many batches can she make if she only has 11/12 cup of milk left?
What are 2 batches of pancakes?
(Answer: 2 and 3/4)
I am dividing 2 mixed numbers. List all the steps (there should be at least 4).
1. convert to improper fractions
2. multiply by the reciprocal
3. simplify before you multiply
4. multiply