Answer:The question is: when we rounded the number ? to the nearest tens we got 70 what digit can be putting the ones place? To round to 70, the number must be 65 or greater, but less than 75. Therefore, the digit in the ones place must be 5, 6, 7, 8, or 9. Therefore, the possible digits are 5, 6, 7, 8, or 9.