1 10? 59? =? 5 1

123? 45? =? Seventy-eight

1 1 1? 35? =? 76

100? 89? =? 1 1

45? 29? =? 16

Vertical, please see the picture:

Matters needing attention in vertical decimal multiplication

1, with vertical columns, is mantissa alignment of factors.

2. When the column is vertical, for the convenience of calculation, factors with more digits are generally put on it.

3. If there are integer 10000 factors, the first digits of the two factors from the right are non-zero-aligned, and then the corresponding number of zeros is filled in the number.

If there is 0 at the end of the number, count the decimal point first, and then go to 0.

5. If there are not enough decimal places, you need to add 0 in front.