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Addition Sense

From small sums to two-digit mental math — build the sense to add quickly in your head, no calculator.

What you learn here

1. Make Ten
2. Small Additions
3. Make Ten to Add
4. Doubles & Near-Doubles
5. Two-Digit + One-Digit
6. Two-Digit + Two-Digit
7. Round & Adjust
8. Group to Make Tens

8 lessons · Free · no sign-up needed