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Number Bonds Worksheets

Number Bonds Worksheets

This Number Bonds Worksheet is great for testing children in their ability to solve number bonds problems for a given sum. A number bond is a mental picture of the relationship between a number and the parts that combine to make it. The concept of number bonds is very basic, an important foundation for understanding how numbers work. A whole thing is made up of parts. If you know the parts, you can put them together (add) to find the whole. If you know the whole and one of the parts, you take away the part you know (subtract) to find the other part.

Number bonds let children see the inverse relationship between addition and subtraction. Subtraction is not a totally different thing from addition; they are mirror images. To subtract means to figure out how much more you would have to add to get the whole thing.


For example:
   ___ + 7 = 15
   ___ + 9 = 15

This worksheet has the problems written as horizontal missing number problems.

For number bond problems arranged in the form of a tree, use the Number Bonds Trees Worksheets

You may select up to 30 number bonds problems per worksheet.You may select from 5 to 99 for the sum to be used in the problems.

Please Note:
If you select a sum that is less than the number of problems selected the worksheet will repeat some of the problems.


Show Number Bonds Problems with this Sum...


Formats for the Number Bonds Problems

__ + 7 = 12 12 = __ + 7
7 + __ = 12 12 = 7 + __
Mixed Format with
Sum on the Right
Mixed Format with
Sum on the Left


Number of Problems for Each Number Bonds Worksheet







Language for the Number Bonds Worksheet

English German Albanian
Spanish Swedish Italian
French Turkish


Memo Line for the Number Bonds Worksheet

You may enter a message or special instruction that will appear on the bottom left corner of the Number Bonds Worksheet.


You CAN NOT use the following five symbols in the memo line:  #  &  ;  "  \
The first four will suppress the answer key from being produced,
the \ character will cause the entire worksheet to be blank.


Number Bonds Worksheet Answer Page





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