Question

Jane is counting the total number of blocks of milk chocolate that have been used. What are the missing digits from right to left?

• A. 6, 7, and 0
• B. 9, 7, and 0
• C. 9, 0, and 0
• D. 9, 7, and 1

Answer 1

The correct option is B 9, 7, and 0

A few digits are missing in this addition.
While adding two numbers, the digits at ones, tens, hundreds, thousands, and ten thousands places of a number should be added to the corresponding digits at ones, tens, hundreds, thousands, and ten thousands places of another number.
To find the missing digits, add the respective digits.
- Add the digits at ones place: 2 + 7 = 9
So, the first missing digit is 9.
- Add the digits at tens place: 6 + 1 = 7
So, the second missing number is 7.
- Add the digits at hundreds place: 3 + 4 = 7
- Add the digits at thousands place: 9 + 3 = 12
- Regrouping of added digits at thousands place. Regrouping 12 thousands as 1 ten thousand and 2 thousands.
- The addition at ten thousands place should come as 4. We have also regrouped 1 ten thousand from a thousand. So, the addition is 3 + 1 = 4. Thus, the missing digit should be 0.
So, the third missing digit is 1.
The addition of the digits at the hundred thousand place: 1 + 3 = 4

Hence, the missing digits from right to left are 9, 7, and 0.