Thinking of solving problems: Four arithmetic rules (calculation in sequence, first multiplication and division, then addition and subtraction, first parenthesis, first power), that is, disjoint operation (recursive equation calculation), should be carried out on the premise of this principle.

Problem solving process:

1 19-23+46

=96+46

= 142

Extended data [vertical calculation-calculation result]: align the digits of two addends, and then add the digits in the same counting unit respectively. When the addition result exceeds 10, 1 will be added to the high position, and the high position addition needs to accumulate the result of 1 to the low position.

Problem solving process:

Step 1: 6+6=2 to the high position, 1.

Step 2: 9+4+ 1=4 to the high position, 1.

According to the above calculation steps, the comprehensive calculation result is 142.

If in doubt, please ask questions. If satisfied, please adopt them.