Page 128 - New Medley 3 Semester 1

EXERCISE 3.1

Find the difference.
1. Th H T O 2. Th H T O 3. Th H T O

7 4 6 8 9 5 8 6 9 8 6 9

– 2 3 4 2 – 5 2 1 4 – 7 2 3 4

4. Th H T O 5. Th H T O 6. Th H T O

8 5 8 4 9 6 2 5 7 9 5 3

– 3 2 5 3 – 4 4 1 5 – 5 3 2 1

7. Th H T O 8. Th H T O 9. Th H T O

8 2 8 9 7 2 7 3 8 6 8 7

– 5 1 0 6 – 3 1 4 2 – 7 4 5 4

Th H T O Th H T O Th H T O
10. 11. 12.

8 9 7 8 7 7 6 7 6 4 9 8

– 3 2 4 2 – 4 1 2 2 – 2 0 3 4

Subtraction of 4 Digit Numbers (With Borrowing)

Let us recall borrowing in subtraction.

1 ten and 5 ones – 6 ones = 10 ones and 5 ones – 6 ones.

= 15 ones – 6 ones = 9 ones.

1 hundred and 3 tens – 8 tens = 10 tens and 3 tens – 8 tens.

= 13 tens – 8 tens = 5 tens.

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