SUBTRACTION OF 2-DIGIT NUMBERS WITH REGROUPING

Back to: Mathematics Primary 2

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Subtract the numbers 74 − 57

• We line up the numbers vertically.
• In the one’s column, we cannot subtract 7 from 4 as 7 is greater than 4. So, we borrow a ten from tens column. We strike off 7 and write a 6 and put a 1 beside 4 to make it 14. Now we subtract 14 – 7 = 7. 7 is written down below one’s column.
• Next in the ten’s column, we subtract 6 − 5 = 1. 1 is written down below tens column. So, the answer is 17.

               

 

Subtract 53 − 39

• Align or arrange the numbers vertically.
• In the one’s column, we cannot subtract 9 from 3 because 9 is greater than 3. So, we borrow a ten from 5 in the ten’s column. We strike off 5 and write a 4 to its left. We put a 1 to the left of 3 to make it 13. (1 ten = 10 ones). Now we 13 − 9 = 4. 4 is written below one’s column.
• Next in the ten’s column, 4 – 3 = 1. 1 is then written below tens column and the final answer is 14

           

ACTIVITY

Subtract:

1. 42 – 39
2. 92 – 66
3. 81 – 58
4. 80 – 33
5. 74 – 58
6. 32 -27

 

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