
Concept explainers
(a)
The equivalent value of addition of
(a)

Answer to Problem 40A
Explanation of Solution
Given:
Calculation:
For the addition of decimals,
Write down the numbers one under the other such that their decimal points are lined up. Then add zeros at the end of the numbers so that each number has same length. Finally, add the numbers using column addition and put the decimal point in the appropriate place in the answer.
Find the addition of
Round off the result to the least precise value among the measurement-the smallest number of digits to the right of decimal points.
Among the given numbers, the least precision value is
The sum is only precise as the least precise number being added.
Hence, the result of the sum is rounded off to
Conclusion:
Hence, the addition of
(b)
The equivalent value of addition of
(b)

Answer to Problem 40A
Explanation of Solution
Given:
Calculation:
For the addition of decimals,
Write down the numbers one under the other such that their decimal points are lined up. Then add zeros at the end of the numbers so that each number has same length. Finally, add the numbers using column addition and put the decimal point in the appropriate place in the answer.
Find the addition of
Round off the result to the least precise value among the measurement-the smallest number of digits to the right of decimal points.
Among the numbers, the least precision value is
The sum is only precise as the least precise number being added.
Hence, the result of the sum is rounded off to
Conclusion:
Hence, the addition of
(c)
The equivalent value of subtraction of
(c)

Answer to Problem 40A
Explanation of Solution
Given:
Calculation:
For the subtraction of decimals,
Write down the numbers one under the other such that their decimal points are lined up. Then add zeros at the end of the numbers so that each number has same length. Finally, subtract the numbers using column subtraction and put the decimal point in the appropriate place in the answer.
Find the subtraction of
Round off the result to the least precise value among the measurement-the smallest number of digits to the right of decimal points.
Among the measurements, the least precision value is
The subtraction is only precise as the least precise number being involved in subtraction.
Hence, the result of the subtraction is rounded off to
Conclusion:
Hence, the subtraction of
(d)
The equivalent value of subtraction of
(d)

Answer to Problem 40A
Explanation of Solution
Given:
Calculation:
For the subtraction of decimals,
Write down the numbers one under the other such that their decimal points are lined up. Then add zeros at the end of the numbers so that each number has same length. Finally, subtract the numbers using column subtraction and put the decimal point in the appropriate place in the answer.
Find the subtraction of
Round off the result to the least precise value among the measurement-the smallest number of digits to the right of decimal points.
Among the measurements, the least precision value is
The subtraction is only precise as the least number being involved in subtraction.
Hence, the result of the subtraction is rounded off to
Conclusion:
Hence, the subtraction of
Chapter 1 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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