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2. Elementary arithmetic - Wikipedia

   en.wikipedia.org/wiki/Elementary_arithmetic

   Example of addition with carry. The black numbers are the addends, the green number is the carry, and the blue number is the sum. In the rightmost digit, the addition of 9 and 7 is 16, carrying 1 into the next pair of the digit to the left, making its addition 1 + 5 + 2 = 8. Therefore, 59 + 27 = 86.

3. DreamBox Learning - Wikipedia

   en.wikipedia.org/wiki/DreamBox_Learning

   DreamBox Learning Math teaches students grades K-8 various mathematical subjects, such as addition, subtraction, multiplication, division, fractions, geometry, and algebra. The program utilizes an algorithm to determine if the user is able to understand certain lessons.

4. Fourth grade - Wikipedia

   en.wikipedia.org/wiki/Fourth_grade

   In Portugal, what North Americans would call the fourth grade (quarto ano, 4º ano to Portuguese people) is the fourth and last year of the four-year 1º Ciclo do Ensino Básico which also includes the first grade, the second grade, and the third grade. [7] Students take final exams (provas finais) for Portuguese and Mathematics at the end of ...

5. Addition - Wikipedia

   en.wikipedia.org/wiki/Addition

   A number-line visualization of the algebraic addition 2 + 4 = 6. A "jump" that has a distance of 2 followed by another that is long as 4, is the same as a translation by 6. A number-line visualization of the unary addition 2 + 4 = 6. A translation by 4 is equivalent to four translations by 1.

6. Elementary mathematics - Wikipedia

   en.wikipedia.org/wiki/Elementary_mathematics

   In the 'Number Sense and Numeration' strand students develop an understanding of numbers by being taught various ways of representing numbers, as well as the relationships among numbers. [ 2 ] Properties of the natural numbers such as divisibility and the distribution of prime numbers , are studied in basic number theory , another part of ...

7. Fraction - Wikipedia

   en.wikipedia.org/wiki/Fraction

   A cake with one quarter (one fourth) removed. The remaining three fourths are shown by dotted lines and labeled by the fraction ⁠ 1 / 4 ⁠ A fraction (from Latin: fractus, "broken") represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, a fraction describes how many parts of a certain ...