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- Fundamentals of mathematics
- Addition and subtraction of
- Subtraction of whole numbers
Sample set e
Perform this subtraction.
The number 503 contains a single zero
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The number to the immediate left of 0 is 5. Decrease 5 by 1.
- Draw a line through the zero and make it a 10.
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Borrow from the 10 and proceed.
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Practice set e
Perform each subtraction.
Borrowing from a group of zeros
Consider the problem
In this case, we have a group of zeros.
Since we cannot borrow any tens or hundreds, we must borrow 1 thousand. One thousand = 10 hundreds.
We can now borrow 1 hundred from 10 hundreds. One hundred = 10 tens.
We can now borrow 1 ten from 10 tens. One ten = 10 ones.
From observations made in this procedure we can suggest the following method for borrowing from a group of zeros.
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Borrowing from a group of zeros
To borrow from a group of zeros,
- Decrease the digit to the immediate left of the group of zeros by one.
- Draw a line through each zero in the group and make it a 9, except the rightmost zero, make it 10.
- Proceed to subtract as usual.
Sample set f
Perform each subtraction.
The number 40,000 contains a group of zeros.
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The number to the immediate left of the group is 4. Decrease 4 by 1.
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Make each 0, except the rightmost one, 9. Make the rightmost 0 a 10.
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Subtract as usual.
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The number 8,000,006 contains a group of zeros.
- The number to the immediate left of the group is 8. Decrease 8 by 1.
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Make each zero, except the rightmost one, 9. Make the rightmost 0 a 10.
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To perform the subtraction, we’ll need to borrow from the ten.
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Practice set f
Perform each subtraction.
Calculators
In practice, calculators are used to find the difference between two whole numbers.
Sample set g
Find the difference between 1006 and 284.
Display Reads |
Type |
1006 |
1006 |
Press |
|
1006 |
Type |
284 |
284 |
Press |
= |
722 |
The difference between 1006 and 284 is 722.
(What happens if you type 284 first and then 1006? We'll study such numbers in
[link] Chapter 10.)
Practice set g
Exercises
For the following problems, perform the subtractions. You may check each difference with a calculator.
For the following problems, perform each subtraction.
Questions & Answers
A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
Can you compute that for me. Ty
Jude
what is the dimension formula of energy?
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
Adjei
please, I'm a physics student and I need help in physics
Adjanou
chemistry could also be understood like the sexual attraction/repulsion of the male and female elements. the reaction varies depending on the energy differences of each given gender. + masculine -female.
Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
Ryan
what are the types of wave
Maurice
fine, how about you?
Mohammed
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
Who can show me the full solution in this problem?
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Source:
OpenStax, Fundamentals of mathematics. OpenStax CNX. Aug 18, 2010 Download for free at http://cnx.org/content/col10615/1.4
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