Operations with Integers
1-(-1)=???
2
Convert 1/5 into a percentage.
20%
In a class there are 30 boys and 12 girls. Determine the ratio of number of boys to girls.
5:2
Solve for x.
a+b=x
x=5
How long is Mrs. Kamath's prep period on a Monday-Thursday (regular day) schedule (excluding passing periods)?
52 minutes
5(-6)+(-5)=???
-35
Find 5% of 300.
15
Two numbers are in the ratio 3 : 7. If their sum is 710, find the numbers.
213, 497
Solve for x.
b-a+18=x
x=33
Evaluate.
|-12|
12
5÷-5 - 5=???
-6
A baseball pitcher won 80% of the games he pitched. If he pitched 35 ballgames, how many games did he win?
28 games
The ratio of number of male and female teachers in a school is 3 : 4. If there are 16 female teachers, find the number of male teachers.
Solve for x.
|a|=x
x=5
Solve.
x÷13=18÷39
x=6
(-10)2-(-100)=????
200
There are 36 carpenters in a crew. On a certain day, 29 were present. What percent showed up for work? (round to the nearest tenth)
80.6%
The ages of A and B are in the ratio 3 : 5. Four years later, the sum of their ages is 48. Find their present ages.
15 years, 25 years
Solve for x.
abc=x
x=-70
A student earned a grade of 80% on a math test that had 20 problems. How many problems on this test did the student answer correctly? (round to the nearest whole number)
16 problems
a=b; b=c; c=-1
(-5)3+(-14)+abc=????
-140
Donovan took a math test and got 35 correct and 10 incorrect answers. What was the percentage of correct answers? (Round to the nearest hundredth)
77.78%
In a library the ratio of English books to Math books, is the same as the ratio of Math books to Science book. If there are 1200 books on English and 1800 books on Math, find the number of Science books.
2700 books
Solve for x. Round to the nearest tenth.
b/a=cx
x=-1.4
Solve for x.
x(3(√4)+6)=9.6
x=0.8