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Math Grade 2-3 Answer Key

Subtracting 3-Digit Numbers with Regrouping

Practice borrowing across ones, tens, and hundreds

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Subtracting 3-Digit Numbers with Regrouping

Practice borrowing across ones, tens, and hundreds

Math - Grade 2-3

Instructions: Subtract each problem carefully. Line up the hundreds, tens, and ones. Regroup when needed and show your work.
  1. 1

    Subtract: 482 - 167

    Start in the ones place. Since 2 is less than 7, regroup from the tens place.

    482 - 167 = 315. Regroup 1 ten as 10 ones, then subtract each place value.
  2. 2

    Subtract: 731 - 286

    731 - 286 = 445. Regroup in the ones place and then regroup in the tens place before subtracting.
  3. 3

    Subtract: 605 - 278

    When there are 0 tens, regroup from the hundreds place first.

    605 - 278 = 327. Regroup 1 hundred into 10 tens, then regroup 1 ten into 10 ones before subtracting.
  4. 4

    Subtract: 900 - 456

    Both the tens and ones places need regrouping because 900 has 0 tens and 0 ones.

    900 - 456 = 444. Regroup from the hundreds place to make tens and ones before subtracting.
  5. 5

    Subtract: 523 - 349

    523 - 349 = 174. Regroup in the ones place and then regroup in the tens place.
  6. 6

    Subtract: 810 - 275

    Because the ones place has 0, you need to regroup before subtracting 5.

    810 - 275 = 535. Regroup 1 hundred into 10 tens, then regroup 1 ten into 10 ones.
  7. 7

    Subtract: 694 - 258

    694 - 258 = 436. Regroup 1 ten as 10 ones, then subtract the ones, tens, and hundreds.
  8. 8

    Subtract: 372 - 189

    After you regroup for the ones place, check whether the tens place still has enough to subtract.

    372 - 189 = 183. Regroup in the ones place, then regroup in the hundreds place to help subtract the tens.
  9. 9

    Subtract: 456 - 229

    456 - 229 = 227. Regroup 1 ten as 10 ones, then subtract each place value.
  10. 10

    A library has 642 books on a shelf. Students check out 275 books. How many books are left on the shelf?

    Write 642 - 275 vertically and regroup when a top digit is smaller than the bottom digit.

    There are 367 books left on the shelf because 642 - 275 = 367.
  11. 11

    A farmer picked 503 apples. The farmer sold 148 apples. How many apples are left?

    The number 503 has 0 tens, so regroup from the hundreds place first.

    The farmer has 355 apples left because 503 - 148 = 355.
  12. 12

    Subtract: 700 - 365

    700 - 365 = 335. Regroup from the hundreds place to make enough tens and ones.
  13. 13

    Subtract: 846 - 597

    846 - 597 = 249. Regroup in the ones place, then regroup in the tens place before subtracting.
  14. 14

    A school ordered 620 pencils. Teachers gave out 384 pencils. How many pencils are still left?

    Regroup from the hundreds place to help with the tens and ones places.

    There are 236 pencils left because 620 - 384 = 236.
  15. 15

    Subtract: 958 - 679

    Start with 8 - 9 in the ones place. Since 8 is smaller than 9, regroup from the tens place.

    958 - 679 = 279. Regroup in the ones place and in the tens place to finish the subtraction.
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