Here is the list of 8th Grade math exercises available online for free. Each corrected exercise is accompanied by indications, reminders of course, methodological advice which allows you to practice independently.
Exercise example :
Use yellow numbers and blue arithmetic operators to calculate the target number.
Exercise example :
Expand the following expression `-10*(-12)`.
1311 decimal writing and operations on relative numbers 8th Grade evaluateExercise example :
Put in the form `a*1/b` the following fraction `19/6`
1312 decimal writing and operations on relative numbers | fractions 8th GradeExercise example :
Give a value approximating to 0.1 of the following fraction `19/6`.
1313 decimal writing and operations on relative numbers 8th GradeExercise example :
Simplify the following fraction `(3*3)/(8*3)`.
1314 decimal writing and operations on relative numbers | fractions 8th Grade fractionExercise example :
Put in the form of an irreducible fraction: `-5*8/(9*6)`.
1315 decimal writing and operations on relative numbers | fractions 8th Grade fractionExercise example :
Put in the form of an irreducible fraction: `((2)/(-4))/((6)/(9))`.
1316 decimal writing and operations on relative numbers | fractions 8th Grade fractionExercise example :
Give a value approximated to `10^-1` of `sqrt(91)`.
1324 decimal writing and operations on relative numbers 8th Grade sqrtExercise example :
Simplify the following expression `1+5*z+2*z^2+5+4*z+z^2+4+2*z+5*z^2`.
1325 expansion of algebraic expressions 8th Grade simplifyExercise example :
Expand the following expression `(-4*a-8*b)*(5*a+3*b)`.
1326 algebraic calculus 7th Grade | 8th Grade expand_and_simplifyExercise example :
Compute the following expression `2+x+9+4*y` for x=4 ,y=6.
1327 algebraic calculus 8th GradeExercise example :
Compare the following two expressions `90/10` ... `27/10`.
1328 comparisons of numbers, fractions, expressions | fractions 8th Grade compare_fractionsExercise example :
Give a frame to the nearest `10^-1` of the following fraction `25/4`.
1329 comparisons of numbers, fractions, expressions | fractions 8th GradeExercise example :
I have a number, I add 27 to it, I subtract 22 from the result and I get 43, what is this number?
1330 algebraic calculus 8th Grade equation_solverExercise example :
Does the following table correspond to a proportionality table?
6 | 4 | 3 |
---|---|---|
60 | 41 | 32 |
Exercise example :
What is the coefficient of proportionality that allows us to go from the first to the second line of the following table?
9 | 7 | 1 |
---|---|---|
54 | 42 | 6 |
Exercise example :
By what value must we replace the ? so that the following table is a proportionality table?
7 | 3 | 4 | 8 |
---|---|---|---|
28 | ? | 16 | 32 |
Exercise example :
What is the missing value in the following proportionality table?
x | 80 |
---|---|
294 | 560 |
Exercise example :
We suppose that `3*x-2<5`. Choose the expression that is true from the list below.
1335 comparisons of numbers, fractions, expressions 8th Grade inequality_solverExercise example :
Solve the following equation: 4*y-4=6.
1336 solving equations | algebraic calculus | equations 8th Grade equation_solverExercise example :
Solve the following equation: 2*x+3=5.
1337 solving equations | algebraic calculus | equations 8th Grade equation_solverExercise example :
Solve the following equation: 4*z+3=6*z+8.
1338 solving equations | algebraic calculus | equations 8th Grade equation_solverExercise example :
My quadruple is equal to 32. Who am I?
1339 solving equations | algebraic calculus | equations 8th Grade equation_solverExercise example :
In a class of 10 students 70 % got the average on the last test. What is the number of students who did not get the average?
1340 solving equations | algebraic calculus | equations 8th GradeExercise example :
In a class of 10 students, 4 got the average in the last math test. What percentage of students got the average?
1341 solving equations | algebraic calculus | equations 8th Grade percentageExercise example :
In a class of 30 students there are 9 boys. What is the percentage of boys in this class?
1342 solving equations | algebraic calculus | equations 8th Grade percentageExercise example :
In the triangle ABC rectangle in A, we give AB=20 and AC=15..
Calculate BC.
Themes associated with the 8th Grade : algebraic calculus, mental math games, right-angled triangles, square roots, fractions, decimal writing and operations on relative numbers, power, expansion of algebraic expressions, comparisons of numbers | fractions | expressions.
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