Review
What is the area of a rectangle with a length of 2.5 units and a width of 3 units?
7.5 square units
Product
Answer to a multiplication question
0.5 + 0.5
1
0.5 - 0.25
0.25
You have $5.00 to spend at the grocery store. Do you have enough to buy one head of lettuce and two limes?
Head of Lettuce - $1.15
1 lime - $0.53
Yes. Exact cost = $1.15 + 2($0.53) = $2.21
Approximate cost = $2.15 - $2.50
At the stationery store it costs $15 for 6 notebooks. What is the unit price for notebooks?
$2.50 per notebook
quotient
answer to a division problem
0.25 + 0.35
0.6
0.98 - 0.81
0.17
Clare bought a photo for 17 cents and paid with a $5.00 bill. How much change should she get back?
$4.83
Oscar set a goal of doing 50 push-ups each week. He has completed 40% of his goal for the week. How many push ups has he done?
20 push ups.
Sum
0.075 + 0.123
0.198
1.35 - 0.17
1.18
You bought an apple that weighs 0.25 pounds and a watermelon that weighs 12.3 pounds. How much do these fruit weigh in total?
12.55 pounds
What is the quotient of 2/5 divided by 3/2?
4/15
Common Denominator
Two fractions have a common denominator when the denominator is the same
0.987 + 0.573
1.56
2.365 - 1.357
1.008
There is 0.162 liter of water in a 1-liter bottle. How much more water should be put in the bottle so that it contains exactly 1-liter of water?
0.838 liter
Sai wants to make a large pot of soup. 3/5 of the pot will fill 15 bowls. How many bowls will 1 pot of soup fill?
25 bowls.
Percent
Percent means for every 100. Represented by the symbol %
1.37 + 2.76
4.13
What is the difference between 5.123 and 3.456
1.667
The label on a bag of chocolates states that there are 0.384 pounds of chocolates. The actual weight of the chocolates is 0.3798 pounds. Are the chocolates heavier or lighter than the weight stated on the label?
By how much?
Lighter
By 0.0042 pounds (42 ten thousandths of a pound)