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.