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# Details for problem "Number wall sums of whole numbers"

Quickname: 8704

## Summary

In the number wall missing sums have to be added.

## Example ## Description

This is a classic number wall problem, where positive natural numbers are summed up ascending through the wall.

The number for each brick is formed by adding the numbers in the brick left below and right below the brick. Some bricks are left blank - these have to be filled in with the correct number. Depending on whether both values below an empty box are given, this may be an addition or a subtraction problem.

The number range for the numbers occuring in the number wall can be specified. The wall height is selectable.

Download free worksheets for this math problem here. There is a second sheet with the solutions. Just click on the respective link. Worksheet 1 Solution sheet Worksheet 2 Solution sheet Worksheet 3 Solution sheet

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## Customization options for this problem

ParameterPossible values
Number of problems1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Number range20, 30, 40, 50, 100, 200, 500, 1000, 10000, 100000
Height of wallthree, four