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Add and subtract integers
Interactive exercises
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Interactive exercises
Results
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Interactive exercises - Add and subtract integers


Interactive exercises are generic, application compiles a new series of tasks each time you start.
INTERACTIVE EXERCISES
Interactive exercises: {{restit}}
Name:
Virtual keyboard:
Number of tasks: {{(plynum)}}
Difficulty: {{resdifi}}
{{$index+1}}. task
{{one.qins}}

{{one.qtxt}} =
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{{one.qtxt}} =
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{{one.qtxt}} =
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{{one.qtxt}} =
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7
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9

4
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1
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0
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Correct answer

RESULT
Interactive exercises: {{restit}}
Name:
Date: {{timest * 1000 | date:'dd.MM.yyyy HH:mm:ss'}}
Num. of tasks: {{(anscor+answro)}}
Difficulty: {{resdifi}}
Correct answers: {{anscor}}
Wrong answers: {{answro}}
Efficiency: {{anscor/(anscor+answro)*100|number:0}} %
Time: {{tmdur}} s
Time per task: {{tmdur / (anscor+answro)|number:1}} s

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Add and subtract integers

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Performance - Add and subtract integers
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Performance by months - Add and subtract integers
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Add and subtract integers


The rules for adding and subtracting integers.
The rule Example
+(+a) = a +(+7) = +7
+(−a) = −a +(−5) = −5
−(+a) = −a −(+9) = −9
−(−a) = +a −(−4) = +4

Add and subtract integers - expression


The rules for removing parentheses
[1] When parentheses are preceded by a plus sign (+), remove the parentheses, numbers within the parentheses RETAIN the sign.

EXAMPLE
4 + (−7 + 2) =
Remove the parentheses.
Numbers within the parentheses RETAIN the sign.
4 + (−7 + 2) =
4 − 7 + 2



[2] When parentheses are preceded by a minus sign (−), remove the parentheses, numbers within the parentheses CHANGE the sign.

EXAMPLE
2 − (4 − 5) =
Remove the parentheses.
Numbers within the parentheses CHANGE the sign.
Change +4 to −4 and −5 to +5.
2 − (4 − 5) =
2 − 4 + 5
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Worksheets - Add and subtract integers


Create worksheets and PRINT or SAVE them. You can create unlimited number of different worksheets.

1. CHOOSE SETTINGS :: Choose the number of tasks, difficulty and type of tasks.
2. GENERATE TASKS :: Use the GENERATE button to create a new serie of tasks if you don't like the worksheet you can easily generate another.
3. CREATE PDF :: The worksheet (PDF) opens in a new tab, you can PRINT it or SAVE it to your computer.
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DIFFICULTY
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