Scientific Notation
Simplify: 30
1
Convert 1/3 into a decimal
0.3 (3 repeating)
The football team won 3 of its 12 games but lost the rest. What was the team's win-loss ratio?
1 win /3 losses
What is the equation for finding the average?
sum of all of the numbers/ amount of numbers = average
Reduce the fraction to the lowest terms:
180/256
45/64
Pluto's average distance from the Sun is 3.67 x 109 miles. Write that distance in standard form.
3,670,000,000
Write 3.52 as a mixed number.
3 13/25
30/70 = 21/x
x = x=49
What is the average of the first five prime numbers?
5.6
Multiply: 3/4 x 400
300
5-2
1/25
8 yd 2 ft
1000/w = 2.5
w = 400
At four different stores the price of 1 gallon of milk was $2.86, $2.83, $2.98, and $3.09. Find the average price per gallon rounded to the nearest cent.
$2.94 a gallon
x/y + xy if x = 6 and y = 2
15
Compare:
2.5 x 10-2 ____ 2.5 x 10-3
0.025>0.0025
Write 1.6 as a decimal number rounded to the nearest hundredth.
0.17
Use a ratio box to solve this problem. The ratio of sonorous to discordant voices in the crowd was 7 to 4. If 56 voices were discordant, how many voices were sonorous?
98 voices were sonorous
After four tests Trudy's average score was 85. If her score is 90 on the fifth test, what will be her average for all five tests?
86
Ralph's average score for the 5 tests was 82. On four of the tests his scores were 85, 73, 92, and 66. What was the score on the other test?
94
Write the number in scientific notation:
0.000105
1.05 x 10-4
Three fifths of the 60 questions were multiple-choice. What percent of the 60 questions were not multiple-choice?
40% were NOT multiple choice
Forty-eight sheep were on the farm. Thirty-six cows were also on the farm. What was the ratios of sheep to cows if there were one hundred eight cows.
144 sheep to 108 cows 144 sheep/108 cows
123 is the average score
Use two unit multipliers to convert 4 square meters to square centimeters.
40,000 cm2
4m2 x 100cm/1m x 100cm/1cm = 4(100)(100)cm2