Mathematics problems for Secondary School

Basic Problems.

In this section, we have math problems with 10 levels of difficulty. Each level is related with a curricula year, between 1st and 10th grade (6-16 years old).

First select your level. The answer will be a whole or decimal number, without any letters or fractions... We use the decimal point like comma, not to separate thousands.

You must Justify the Answer with numbers, operations, a decimal point, parentheses or a divided bar:
0 1 2 3 4 5 6 7 8 9 + - * . ( ) /

We know our english is bad, and ours texts can be improve. We need your help for that. We thank your effort.