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Grade 3 - Mathematics
5.14 Subtraction - 3 digit

Subtraction without regrouping:
  1. Start subtracting from the ones place.
  2. If the subtrahend is lesser than minuend in ones place then we borrow 1 from tens place.
  3. If the subtrahend is lesser than minuend in tens place then we borrow 1 from hundreds place
Answer: 533

Subtraction with regrouping:
  1. Start from the ones place, 4 is lesser than 6. So 1 is borrowed from 2 and 4 becomes 14.
  2. In tens place, 2 becomes 1, now again 1 is less than 5, so 1 is borrowed from 8 and 1 becomes 11.
  3. In ones place 4 is subtracted from 7.
Answer: 368

Subtracting across zeros:
  1. When there is a zero it is always made 10 by borrrowing 1 from digits in higher place values.
  2. In ones place 4 is made 14 and zero is made 9 (since 1 is borrowed from 10 to make 14)
  3. In hundreds place 3 becomes 2.
Answer: 117
Directions: Subtract the following. Also write at least ten examples of your own.
Q 1: 300 -158 =
152
252
142

Q 2: 500 - 250 =
450
250
350

Q 3: 100 - 95 =
50
5
105

Q 4: 921 - 721 =
102
201
200

Q 5: 328 - 129 =
201
200
199

Q 6: 485 - 123 =
361
462
362

Q 7: 682 - 190 =
512
592
492

Q 8: 345 - 126 =
219
220
121

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Question 10: This question is available to subscribers only!


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