In this challenge you will practice subtracting and adding numbers. You are given one of the items and the sum. Your task is to solve this equation by identifying the other item. Basic subtraction and addition skills are required. Also, if you want to check your answers – use the opposite mathematical operation.

This mathematical problem will help you to define if you understand the basic principles of more and less. You are given two different numbers and one is bigger than the other. Using mathematical symbols like "<" or ">" that are also known as "less-than" and "greater-than" signs, compare the numbers.

This math problem was created to check your understanding of the basic mathematical operations like subtraction and addition. You are given several natural numbers and by adding and subtracting them you have to calculate the result. You should also be aware of if operation (addition/subtraction) order influences the final result.

In this challenge we will test your addition skills. Use all natural numbers and choose the right answer from the variants given. The result you receive should not exceed 100. This task requires understanding of the basic addition rules, interaction between natural numbers and ability to add several numbers together.

Sometimes subtraction equations are tricky. To solve this task you have to be able to count to 20 and understand the basic principles of subtraction operations. You are given two natural numbers. Make sure you identify a minuend, a subtrahend and come up with the correct answer that is also known as "difference" in subtraction equations.

In this assignment student’s addition skills will be tested. You have a simple equation that consists of two items. Your goal is to calculate the sum. Student has to understand basic addition principles and use them to solve this mathematical problem. For self check you can use your fingers!

In this math problem your addition skills will be tested but unlike simple equations this one consists of two different items: a number and an object. Before solving this equation you have to determine how many objects are displayed on an image and using addition rules give a correct answer.

To solve this challenge you have to use your imagination as far as this equation consists of two different items: a number and an object. First of all, you have to count how many objects are taken from the total number and, using subtraction, calculate how many of them are left.