Answer:Here's the solution to the missing digits problems: When we rounded the number 2_ to the tens, we got 30. What digit can be put in the ones place? - To round up to 30, the number must be 25 or greater, but less than 35. Therefore, the digit in the ones place must be 5, 6, 7, 8, or 9. Answer: 25 When we rounded the number 7_ to the nearest tens we got 70, what digit can be put in the ones place? - To round to 70, the number must be 65 or greater, but less than 75. - Since the tens digit is 7, we only consider 70-74 - Since we are rounding to the nearest ten, and the result is 70, the digit in the ones place must be less than 5, i.e. 0, 1, 2, 3, or 4. Answer: 74