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Details for problem "Add and subtract sibling numbers"

Quickname: 8802

Suitable for K-12 grades: Grade 1 Grade 2 Grade 3

Elementary School, Primary School.


Add and sub sibling numbers in the range from 1 to 100


Add and sub sibling numbers in the range from 1 to 100 (Beispiel für die Lösung) Add and sub sibling numbers in the range from 1 to 100 (Example for this math problem) Add and sub sibling numbers in the range from 1 to 100 (Example for this math problem)


Sibling numbers are numbers whose sum is ten.

This task is used to train sibling numbers that add up to ten.

For this purpose, problems are presented where a two-digit number and a one-digit number must be added or subtracted. With addition, the next tenner is reached, with subtraction the first number is itself a tenner.

It is selectable whether all numbers (1-9) or only a certain number is to be trained. In addition, a trick question can be scattered where the above conditions do not apply.

Topics: Arithmetic Number spaces Whole Numbers

Tags: Addition Subtraction

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Customization options for this problem

Possible values
Number of problems
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Number to practice
1-9, 1, 2, 3, 4, 5, 6, 7, 8, 9
Mixed, Plus, Minus
Trick question
Yes, No

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Deutsche Version dieser Aufgabe
These informational pages with samples describe math problems that can be combined on custom math worksheets with solutions for home and K-12 school use.
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