Math exercises are not the most enjoyable, especially when the notions learned in primary school have taken off. Do you know how to solve the exercise without using a computer?
Mathematics is not the easiest subject we do in school, the extemporal in this subject
they gave us a lot of trouble, but the basics should not be forgotten in any way. A third-grade exercise created a great deal of controversy on the Internet. Internet users contradicted each other in their answers, but few responded correctly.
What is the correct order of operations?
– if in an exercise there are only additions and subtractions, these
it is performed in the order in which they are written, from left to right.
– if there are addition, subtraction, and multiplication in an exercise, the multiplication is performed first, then the addition and subtraction.
– if there are addition, subtraction, multiplication, and division in an exercise, multiplication and division are performed first
in the order in which they are written, then the additions and subtractions in the order in which they are written.
– if in an exercise there are round brackets, brackets, and braces, the operations between the round brackets are performed first, then those between the square brackets and then those between the braces.
Subtractions first and then subtractions are NOT solved. Additions and subtractions are also solved exactly in the order in which they appear, from left to right.
7 x 6 – 3 x 10+ 18: 9 = 42 – 30+ 2 = 12+ 2 = 14
We performed 7 x 6 = 42, 3 x 10 = 30, 18: 9 = 2
Then 42 – 30 = 12
Finally 12+ 2 = 14
How to solve the exercise?
50 + 10 × 0 + 7 + 2 =?
The first time the second degree operation is performed, ie the multiplication: 10 × 0 = 0
And then the additions and subtractions are performed in the order in which they were written, from left to right.
50 + 0 + 7 + 2 = 59
In the end, the correct answer is 59.