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example 3: find 87 – 34. example 4: find 97 – 26.
Solution: Solution:

Tens Ones Tens Ones Tens Ones Tens Ones

8 7 8 7 9 7 9 7

– 3 4 – 3 4 – 2 6 – 2 6

3 5 3 1 7 1

Thus, 87 – 34 = 53. Thus, 97 – 26 = 71.

Practice time 7f

1. Subtract the following.

(a) Tens Ones (b) Tens Ones (c) Tens Ones (d) Tens Ones

7 8 5 6 7 9 7 6
– 6 2 – 3 0 – 1 7 – 3 3

(e) Tens Ones (f) Tens Ones (g) Tens Ones (h) Tens Ones

6 4 8 8 6 7 5 3

– 2 1 – 2 7 – 3 4 – 4 3

2. write the numbers in columns and subtract.

(a) 48 – 16 (b) 75 – 24 (c) 89 – 62 (d) 73 – 42

Tens Ones Tens Ones Tens Ones Tens Ones

– – – –

(e) 45 – 21 (f) 61 – 11
Challenge Question Critical Thinking
Tens Ones Tens Ones
Maya has a puzzle. She needs
to find two pairs of two-digit numbers.

– – When you take the smaller number away
from the bigger number, the answer is 15.
Can you find the numbers?

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