Printable algebra basics worksheets – grade 1 (easy) worksheet for kids. Free PDF download and answer key included.
1. Fill in the missing number: 2 + ___ = 5
2. Fill in the missing number: 7 - ___ = 3
3. Fill in the missing number: ___ + 4 = 9
4. Fill in the missing number: 10 - ___ = 6
5. Fill in the missing number: 3 + ___ = 8
6. Fill in the missing number: ___ - 2 = 5
7. Fill in the missing number: 6 + ___ = 10
8. Fill in the missing number: 9 - ___ = 4