Free online math practice
Mental addition within 100 Practice
Totals up to 100: whole tens, no regrouping, and crossing one ten with a single digit.
Start practicingMental addition within 100
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What you’ll practice
Break a single-digit addend into the part that reaches the next ten and the part left over. These bounded tasks do not cover every two-digit addition.
Where this helps
Adding familiar numbers mentally.
Before you start
Use this topic to practice math you have already learned. The examples show the available kinds of recall tasks; this is not a complete textbook chapter. Check the answer form and any stated conditions.
Try a few examples
Real practice. Real progress.
Example 1 of 4
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Start practicingMental addition within 100
- Free to practice.
- No account required.
- Progress stays on this device.