- math
- Addition, subtraction
- Age 3-16
-
level: elementary
- English
คำแนะนำของผู้เขียน
Identify if you need to add or subtract. Count the total or cross out to find the answer.
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คำแนะนำของผู้เขียน
Identify if you need to add or subtract. Count the total or cross out to find the answer.