Page 78 - Start Up Mathematics_1

3 Subtract the numbers.

H T O H T O H T O
(a) (b) (c)
2 6 7 3 8 4 1 5 6

– 4 5 – 2 4 – 3 0

(d) 723 – 11 (e) 955 – 54 (f) 879 – 68

H T O H T O H T O

– – –

Subtracting 3-Digit Numbers

To subtract 3-digit numbers, first subtract the ones, then the tens and finally
the hundreds. Look at the given example.

H T O H T O H T O

9 7 6 9 7 6 9 7 6

– 5 2 3 – 5 2 3 – 5 2 3

3 5 3 4 5 3

Step 1: Subtract the ones. Step 2: Subtract the tens. Step 3: Subtract the
6 – 3 = 3 7 – 2 = 5 hundreds.

9 – 5 = 4
4 Subtract the numbers.

H T O H T O H T O
(a) (b) (c)
6 7 3 8 3 9 9 4 5

– 2 5 1 – 5 2 8 – 4 4 2

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