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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: 3 questions will be solved this time.Among them
☆1 equations
☆1 arithmetic calculations
☆1 integer calculations
[1/3 Formula]
Work: Calculate the value of equation 1+(1+2)+(1+2+3)+(1+2+3+4)+(1+2+3+4+5) .
Question type: Mathematical calculation
Solution:
1+(1+2)+(1+2+3)+(1+2+3+4)+(1+2+3+4+5)
=1+3+(1+2+3)+(1+2+3+4)+(1+2+3+4+5)
=1+3+6+(1+2+3+4)+(1+2+3+4+5)
=1+3+6+10+(1+2+3+4+5)
=1+3+6+10+15
=4+6+10+15
=10+10+15
=20+15
=35
Answer:1+(1+2)+(1+2+3)+(1+2+3+4)+(1+2+3+4+5)=35
[ 2/3 Equation]
Work: Find the solution of equation a+a+a+a+a+a+a+a+a = 9 .
Question type: Equation
Solution:Original question:
The equation is transformed into :
The coefficient of the unknown number is reduced to 1 :
We obtained :
This is the solution of the equation.
[3/3 Integer column vertical calculation]
Question type: Integer division
Original question: 25688000/125
Solution:
25688000/125 = 205504
Column vertical calculation:
☆1 equations
☆1 arithmetic calculations
☆1 integer calculations
[1/3 Formula]
Work: Calculate the value of equation 1+(1+2)+(1+2+3)+(1+2+3+4)+(1+2+3+4+5) .
Question type: Mathematical calculation
Solution:
1+(1+2)+(1+2+3)+(1+2+3+4)+(1+2+3+4+5)
=1+3+(1+2+3)+(1+2+3+4)+(1+2+3+4+5)
=1+3+6+(1+2+3+4)+(1+2+3+4+5)
=1+3+6+10+(1+2+3+4+5)
=1+3+6+10+15
=4+6+10+15
=10+10+15
=20+15
=35
Answer:1+(1+2)+(1+2+3)+(1+2+3+4)+(1+2+3+4+5)=35
[ 2/3 Equation]
Work: Find the solution of equation a+a+a+a+a+a+a+a+a = 9 .
Question type: Equation
Solution:Original question:
| a | + | a | + | a | + | a | + | a | + | a | + | a | + | a | + | a | = | 9 |
| Left side of the equation = | 9 | a |
| 9 | a | = | 9 |
The coefficient of the unknown number is reduced to 1 :
| a | = | 9 | ÷ | 9 |
| = | 9 | × | 1 9 |
| = | 1 | × | 1 |
We obtained :
| a | = | 1 |
[3/3 Integer column vertical calculation]
Question type: Integer division
Original question: 25688000/125
Solution:
25688000/125 = 205504
Column vertical calculation:
| 2 | 0 | 5 | 5 | 0 | 4 | ||||||||
| 1 | 2 | 5 | 丿 | 2 | 5 | 6 | 8 | 8 | 0 | 0 | 0 | ||
| 2 | 5 | 0 | |||||||||||
| 6 | 8 | 8 | |||||||||||
| 6 | 2 | 5 | |||||||||||
| 6 | 3 | 0 | |||||||||||
| 6 | 2 | 5 | |||||||||||
| 5 | 0 | 0 | |||||||||||
| 5 | 0 | 0 | |||||||||||
| 0 | |||||||||||||