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B. Subtract the number.
(a) Th H T O (b) Th H T O (c) Th H T O
5 2 6 7 3 7 2 4 5 3 5 8
– 2 6 5 4 – 1 8 1 2 – 3 7 3 7
(d) Th H T O (e) Th H T O (f) Th H T O
7 1 7 5 4 3 7 5 6 5 7 4
– 4 6 5 4 – 1 7 6 2 – 3 8 5 3
(g) Th H T O (h) Th H T O (i) Th H T O
6 2 8 6 7 1 6 4 6 2 3 1
– 3 8 4 3 – 3 7 2 6 – 2 7 1 0
SUBTRACTION OF FOUR-DIGIT NUMBERS (BORROWING TENS/HUNDREDS
/THOUSANDS)
Example: Subtract 2765 from 6351.
Solution: (i) We cannot subtract 5 ones from 1 ones
Th H T O
Borrow 1 tens from 5 tens leaving 4 tens 12 14 11
5 2 4
1 tens + 1 ones = 10 ones + 1 one = 11 ones
6 3 5 1
11 ones – 5 ones = 6 ones – 2 7 6 5
(ii) Borrow 1 hundred leaving 2 hundreds 3 5 8 6
1 hundred 4 tens = 14 tens
14 tens – 6 tens = 8 tens
47
Subtraction
Mathematics-3
