# Arithmetic triangles 1st grade - solve online or print as PDF

## Arithmetic triangles - how do you solve an arithmetic triangle?

**Arithmetic triangles - How do you solve an arithmetic triangle?**

We use arithmetic triangles to solve addition tasks. The two numbers next to each other are added together. The solution is written in the box next to the numbers outside the triangle.

On this page we practise adding numbers from 1 to 20 with arithmetic triangles Grade 1.

## Arithmetic triangles - Arithmetic to 10

**Arithmetic triangle Exercise 1 - Solve the addition tasks**

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**online Exercise 2 - Find the solutions for the arithmetic triangles!**

**No. 3 - even more arithmetic triangles!**

**Exercise 4 - Did you get it?**

**No. 5 - It goes even further!**

**Exercise 6 - The last exercise with arithmetic triangles to 10!**

## Triangles to 20 - Find the solutions online

**Arithmetic triangle - Exercise 1 - Now solve the problems for addition up to 20**

You can also incorporate these math exercises into your app!

**Exercise 2 - Arithmetic to 20 with arithmetic triangles**

**Triangle Exercise 3 - Calculate to 20 even more calculation triangles**

**No. 4 - Calculate to 20 even more calculation triangles**

**Exercise 5 - Calculate to 20 it goes on!**

**No. 6 - the last round - arithmetic triangles!**

## Worksheets with arithmetic triangles - as PDF

**Solve arithmetic triangles**

Worksheets to print out or as a PDF for GoodNotes or oneNote on the tablet computer.

6 pages with the arithmetic triangle exercises on this page!

**Choose your language in the menu and the worksheets are also in your language!**