Grade 2 Subtraction: Mixed Subtraction Review

Worked examples

Real problems from the practice worksheets, solved one step at a time.

1. Example 1

   71 − 34 = ?

   1. Look at the ones place: 1 − 4
   2. 1 is less than 4, so we need to regroup (borrow).
   3. Borrow 1 ten from 7 tens, leaving 6 tens.
   4. 1 becomes 11 ones.
   5. Now subtract the ones: 11 − 4 = 7
   6. Subtract the tens: 6 − 3 = 3
   7. The answer is 37.

   Answer: 37

2. Example 2

   78 − 9 = ?

   1. Look at the ones place: 8 − 9
   2. 8 is less than 9, so we need to regroup (borrow).
   3. Borrow 1 ten from 7 tens, leaving 6 tens.
   4. 8 becomes 18 ones.
   5. Now subtract the ones: 18 − 9 = 9
   6. Subtract the tens: 6 − 0 = 6
   7. The answer is 69.

   Answer: 69

3. Example 3

   12 − 9 = ?

   1. Start at 12 on the number line.
   2. Count backward 9 steps.
   3. You land on 3.
   4. Or think: 9 + ? = 12. The answer is 3!

   Answer: 3