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Mathematical calculation：
Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
It supports mathematical functions (including trigonometric functions).
Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Computation > Answer
Overview: 7 questions will be solved this time.Among them
☆2 arithmetic calculations
☆5 integer calculations
[1/7 Formula]
Work: Calculate the value of equation 31×870+13×310 .
Question type: Mathematical calculation
Solution:
31×870+13×310
=26970+13×310
=26970+4030
=31000
Answer:31×870+13×310=31000
[2/7 Integer column vertical calculation]
Question type: Integer multiplication
Original question: 84×101
Solution:
84×101 = 8484
Column vertical calculation:
[3/7 Integer column vertical calculation]
Question type: Integer multiplication
Original question: 504×25
Solution:
504×25 = 12600
Column vertical calculation:
[4/7 Integer column vertical calculation]
Question type: Integer multiplication
Original question: 999×99
Solution:
999×99 = 98901
Column vertical calculation:
[5/7 Integer column vertical calculation]
Question type: Integer multiplication
Original question: 78×102
Solution:
78×102 = 7956
Column vertical calculation:
[6/7 Formula]
Work: Calculate the value of equation 99×13+13 .
Question type: Mathematical calculation
Solution:
99×13+13
=1287+13
=1300
Answer:99×13+13=1300
[7/7 Integer column vertical calculation]
Question type: Integer multiplication
Original question: 25×204
Solution:
25×204 = 5100
Column vertical calculation:
>>注：本次最多计算 7 道题。
☆2 arithmetic calculations
☆5 integer calculations
[1/7 Formula]
Work: Calculate the value of equation 31×870+13×310 .
Question type: Mathematical calculation
Solution:
31×870+13×310
=26970+13×310
=26970+4030
=31000
Answer:31×870+13×310=31000
[2/7 Integer column vertical calculation]
Question type: Integer multiplication
Original question: 84×101
Solution:
84×101 = 8484
Column vertical calculation:
| 8 | 4 | ||||||||
| ✖ | 1 | 0 | 1 | ||||||
| 8 | 4 | ||||||||
| 0 | 0 | ||||||||
| 8 | 4 | ||||||||
| 8 | 4 | 8 | 4 | ||||||
[3/7 Integer column vertical calculation]
Question type: Integer multiplication
Original question: 504×25
Solution:
504×25 = 12600
Column vertical calculation:
| 5 | 0 | 4 | |||||||
| ✖ | 2 | 5 | |||||||
| 2 | 5 | 2 | 0 | ||||||
| 1 | 0 | 0 | 8 | ||||||
| 1 | 2 | 6 | 0 | 0 | |||||
[4/7 Integer column vertical calculation]
Question type: Integer multiplication
Original question: 999×99
Solution:
999×99 = 98901
Column vertical calculation:
| 9 | 9 | 9 | |||||||
| ✖ | 9 | 9 | |||||||
| 8 | 9 | 9 | 1 | ||||||
| 8 | 9 | 9 | 1 | ||||||
| 9 | 8 | 9 | 0 | 1 | |||||
[5/7 Integer column vertical calculation]
Question type: Integer multiplication
Original question: 78×102
Solution:
78×102 = 7956
Column vertical calculation:
| 7 | 8 | ||||||||
| ✖ | 1 | 0 | 2 | ||||||
| 1 | 5 | 6 | |||||||
| 0 | 0 | ||||||||
| 7 | 8 | ||||||||
| 7 | 9 | 5 | 6 | ||||||
[6/7 Formula]
Work: Calculate the value of equation 99×13+13 .
Question type: Mathematical calculation
Solution:
99×13+13
=1287+13
=1300
Answer:99×13+13=1300
[7/7 Integer column vertical calculation]
Question type: Integer multiplication
Original question: 25×204
Solution:
25×204 = 5100
Column vertical calculation:
| 2 | 5 | ||||||||
| ✖ | 2 | 0 | 4 | ||||||
| 1 | 0 | 0 | |||||||
| 0 | 0 | ||||||||
| 5 | 0 | ||||||||
| 5 | 1 | 0 | 0 | ||||||
>>注：本次最多计算 7 道题。