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:
17×62+62×63
=( 17+63)×62
=80×62
=4960
Vertical calculation of extended data-calculation result: first, align the last bit of two multipliers, then use the second multipliers respectively, multiply each bit by one multiplier in turn from the last bit, and finally accumulate the calculation result into a product. If the multiplier is decimal, the corresponding multiple can be expanded first, and then the product can be reduced by the corresponding multiple;
Problem solving process:
Step 1: 2×80= 160
Step 2: 6×80=4800
According to the above calculation results, the total is 4960.
If in doubt, please ask questions. If satisfied, please adopt them.