How to calculate arrow 2 in mathematics? Look at the arrow to calculate addition and subtraction. The arrow pointing to the upper right indicates the positive direction, that is, if the arrow points to the lower or left, it indicates the addition in the opposite direction. For example, the arrow only points to the number 2, so we should calculate the addition as adding 2. If the arrow only points to the number 1, we should subtract 1.

Description:

If the arrow points to the right, it means addition, and the cutting head points to the left, it means subtraction. Gartner's arrow symbol is a method to represent large integers, which was designed by Gartner in 1976. Its idea comes from the multiplication of repeated powers, and multiplication is repeated addition. N arrows represent n+2 super operations. This arrow symbol usually means to use the result of the previous question and then use the arrow symbol to calculate.

For example, add 3 to 52, then subtract 20 from the arrow symbol, multiply 5 by the arrow symbol, calculate 52 and 3 to get 55, subtract 28 from the calculation result 55, finally get 23, and multiply 23 by 5. The final result is 1 15. We should all know that the knowledge learned by primary school students is catching up with our junior high school.

The coincidence that often occurs in the addition and subtraction of primary school students' homework → According to my own opinion, I think the meaning of coincidence → should mean the next step, or the equivalent meaning.