Here is the list of mathematical exercises on calculations with integers and decimals available online for free. Each corrected exercise is accompanied by indications, reminders of the course, methodological advice which allows you to practise independently.
7 exercisesExercise example N°1311 :
Expand the following expression `-10*(-12)`.
decimal writing and operations on relative numbers Numbers 8th Grade evaluate
The objective of this algebraic calculus exercise is to expand an algebraic expression.
Exercise example N°1312 :
Put in the form `a*1/b` the following fraction `19/6`
decimal writing and operations on relative numbers Numbers fractions 8th Grade
The objective of this exercise is to put the product of a number by the inverse of another number in fraction form.
Exercise example N°1313 :
Give a value approximating to 0.1 of the following fraction `19/6`.
decimal writing and operations on relative numbers Numbers 8th Grade
This exercise allows to practice calculations with decimals, the goal is to give the approximate value of a fraction to one decimal place.
Exercise example N°1314 :
Simplify the following fraction `(3*3)/(8*3)`.
decimal writing and operations on relative numbers Numbers fractions 8th Grade fraction
The objective of this activity is to simplify a fraction whose numerator and denominator are composed of products of whole numbers.
Exercise example N°1315 :
Put in the form of an irreducible fraction: `-5*8/(9*6)`.
decimal writing and operations on relative numbers Numbers fractions 8th Grade fraction
This exercise allows to learn how to simplify a fraction whose numerator and denominator are composed of product of relative numbers.
Exercise example N°1316 :
Put in the form of an irreducible fraction: `((2)/(-4))/((6)/(9))`.
decimal writing and operations on relative numbers Numbers fractions 8th Grade fraction
The objective of this exercise is to simplify a fraction whose numerator and denominator are fractions, in other words, a fraction of fractions.
Exercise example N°1324 :
Give a value approximated to `10^-1` of `sqrt(91)`.
decimal writing and operations on relative numbers Numbers 8th Grade sqrt
The objective of this exercise is to give an approximate value of a square root to one decimal place.