Supporting Lessons
Addition and Subtracting 10: Worksheets and Answers
Adding and Subtracting Tens: Random Question Generator
How to Add or Subtract 10
If we choose a number on the number grid and move one place down, we are adding 10.
For example:
If we begin with 10 and move one place down the number grid, we have added 10.
10 + 10 = 20.
If we begin with 32 and move one place down the number grid, we have added 10.
32 + 10 = 42.
If we choose a number on the number grid and move one place up, we are subtracting 10.
For example:
If we begin with 50 and move one place up the number grid, we have subtracted 10.
50 – 10 = 40.
If we begin with 94 and move one place up the number grid, we have subtracted 10.
94 – 10 = 84.
