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Subtraction up to 20
Interactive exercises
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Interactive exercises
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## Interactive exercises - Subtraction up to 20

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}}
{{one.qins}}

{{one.qtxt}}

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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

Save the result and track your progress.
6
10
15
DIFFICULTY
MEDIUM
16 - 5 =

# Subtraction up to 20

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Performance - Subtraction up to 20
Proportion of correct answers (in %) for the last {{chrAnum}} exercises.
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Tasks solved by months - Subtraction up to 20
Number of completed tasks by months. One exercise usually contains 6 to 15 tasks.
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Performance by months - Subtraction up to 20
Proportion of correctly solved tasks (in %) by months.
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Tasks by difficulty - Subtraction up to 20
Number of solved tasks by difficulty in each month.
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## Learn subtraction

Choose numbers.

-

{{shwC}} - {{shwD}} = {{shwResS}}
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## Worksheets - Subtraction up to 20

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.