Problem solving process:

83× 18+ 18× 17

=(83+ 17)× 18

= 100× 18

= 1800

Extended data->; Vertical calculation-calculation result: align two addend numbers, and then add the numbers in the same counting unit separately. If the addition result exceeds 10, it is 1, and the high-order addition needs to accumulate the low-order addition result of 1.

Problem solving process:

Step 1: 3+7=0 to the high position, 1.

Step 2: 8+ 1+ 1=0 to the high position, 1.

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

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