72 - 67
Answer
5
Calculation Steps:
72 - 67
=5
Calculation Processes:
Single calculation
1
72 - 67
Exercise
72 - 67
Solution Process
72 and 67 are all positive numbers.
When subtracting two positive numbers, you can directly subtract number to subtract from the number being subtracted and keep the sign unchanged.
Answer
5
Vertical
TensOnes-7612705
Calculation Details
72 and 67 are all positive numbers.
When subtracting two positive numbers, you can directly subtract number to subtract from the number being subtracted and keep the sign unchanged.
1
In vertical addition or subtraction, ensure that digits with the same place value are aligned.
1
The same digits must be aligned, usually starting from the ones digit; when calculating addition and subtraction of decimals, the decimal points must be aligned first.
2
Align the Ones digits 2 and 7.
TensOnes-7627
3
Align the Tens digits 7 and 6.
TensOnes-7627
2
In addition and subtraction, start calculations from the rightmost digit.
1
In math addition and subtraction, start at the last digit and work your way to the left, digit by digit, until the calculation is complete.
2
Calculate 2 - 7 in the Ones place. Since 2 is less than 7, it is not enough to subtract. We need to borrow 1 from the higher place value and treat it as 10. After borrowing, the Ones digit becomes 12. Next, calculate 12 - 7, the result is 5. Write the result 5 below the vertical form.
TensOnes-761275A more intuitive calculation method is to use a number line, where the point representing a number on the number line increases from left to right and decreases from right to left. Therefore, subtraction can be performed by moving to the left along the number line.1.Calculate 2 - 7 in the Ones place. Since 2 is less than 7, it is not enough to subtract. We need to borrow 1 from the higher place value and treat it as 10. After borrowing, the Ones digit becomes 12.The point representing 2 on the number line is moved 10 units to the right along the number line, and the result is 12.2.Next, calculate 12 - 7, the result is 5.Continue moving 7 units to the left along the number line, and the result is 5.-10-9-8-7-6-5-4-3-2-101(1)2345678910(2)11121314151617(1)The point representing 2 on the number line is moved 10 units to the right along the number line, and the result is 12.(2)Continue moving 7 units to the left along the number line, and the result is 5.
3
From the Tens place 7, 1 was borrowed, leaving 6. Next, calculate 6 - 6, the result is 0. Write the result 0 below the vertical form.
TensOnes-7612705A more intuitive calculation method is to use a number line, where the point representing a number on the number line increases from left to right and decreases from right to left. Therefore, subtraction can be performed by moving to the left along the number line.1.From the Tens place 7, 1 was borrowed, leaving 6.The point representing 7 on the number line is moved 1 units to the left along the number line, and the result is 6.2.Next, calculate 6 - 6, the result is 0.Continue moving 6 units to the left along the number line, and the result is 0.-5-4-3-2-101234(2)5(1)6789101112(1)The point representing 7 on the number line is moved 1 units to the left along the number line, and the result is 6.(2)Continue moving 6 units to the left along the number line, and the result is 0.
3
When 0 is in the highest place and has no actual value, it can be omitted.
4
Calculate 72 - 67. The result is 5.
2
Summarize
Finally, 72 - 67 equals 5.