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Subtracting a 2-digit Number from a 2-digit Number

Example 3. Subtract 36 from 52.

Solution.

Step 1. Subtract the ones. Step 2. Subtract the tens.

Since 2 < 6, borrow 1 ten T O 4 tens are left. T O

from 5 tens. 4 12 So, 4 – 3 = 1 ten. 4 12
1 ten + 2 ones 5 2 Write 1 in the tens place. 5 2

= 10 ones + 2 ones = 12 ones – 3 6 – 3 6

Now, 12 – 6 = 6 ones. 6 1 6
Write 6 in the ones place.

So, 52 – 36 = 16.
Example 4. Find:

a. 82 – 38 b. 71 – 39
Solution.
a. T O b. T O

7 12 6 11 Subtract the

8 2 7 1 ones first, then

– 3 8 – 3 9 subtract the tens.

4 4 3 2

So, 82 – 38 = 44. So, 71 – 39 = 32.

21 st
Activity Century #Critical Thinking
Skills

There are two friendship bands, 10 19 7
A and B. Some numbers written 9 6
on the beads are such that the 2 8 12

number on the square bead is the 17 A 8 B
difference of the numbers written
on the adjacent round beads. 1 3
Write the missing numbers and 26 19 4 15 5 9
colour the beads in two different
colours.

55
Subtraction