Current location - Training Enrollment Network - Mathematics courses - How to mark the carry point of vertical calculation in senior two mathematics?
How to mark the carry point of vertical calculation in senior two mathematics?
Operational analysis vertical process 56+44 (the second one is more correct)

Solution: Align the two addend units, and then add the numbers in the same counting unit respectively. If the addition result exceeds 10, the high bit of 1 will be removed, and the addition of the high bit needs to accumulate the low bit of 1.

Problem solving process:

Step 1: 6+4=0 to the high position, 1.

Step 2: 5+4+ 1=0, and move to the high position of 1

According to the above calculation steps, the combined calculation result is 100.

Checking calculation: 100-56=44

Extended data ← Check the calculation result: align the unit of subtraction with the unit of subtraction, and then subtract them from the corresponding counting units. If the reduction is not enough, you need to borrow 1 from the high position, and then calculate the results in turn. If the subtraction is less than the minuend, the two numbers are exchanged and subtracted, and a negative sign is added to the final result; Fractional subtraction can refer to the integer subtraction step;

Problem solving process:

Step 1: 10-6=4 Borrow from high position 1.

Step 2: High-level borrowing 10-5- 1=4.

Step 3: 1-0- 1=0.

According to the above calculation steps, the comprehensive calculation result is 44.

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