Learn how to do subtraction placing the numbers in columns. Subtract from twodigit numbers by arranging and placing the numbers correctly in tens and ones column.
1. Subtract 23 from 89 (by placing the numbers in column).
Solution:
Subtract 89  23 arrange by placing the numbers in column
T O
8 9
 2 3
6 6
(i) Given numbers are written in column form.
(ii) Subtraction of digits at one’s place, 9 – 3 = 6 ones.
(iii) Subtraction of digits at ten’s place, 8 – 2 = 6 tens.
(iv) Subtracted sum = 6 tens + 6 ones = 60 + 6 = 66
(v) Therefore, 89 – 23 = 66
2. Subtract 46
from 78 (by placing the numbers in column).
Solution:
Subtract 78  46 arrange by placing the numbers in column.
T O
7 8
 4 6
3 2
(i) Given numbers are written in column form.
(ii) Subtraction of digits at one’s place, 8 – 6 = 2 ones.
(iii) Subtraction of digits at ten’s place, 7 – 4 = 3 tens.
(iv) Subtracted sum = 3 tens + 2 ones = 30 + 2 = 32
(v) Therefore, 78  46 = 32
3. Subtract 23 from 94 (by placing the numbers in column).
Solution:
Subtract 94  23 arrange by placing the numbers in column.
T O
9 4
 2 3
7 1
(i) Given numbers are written in column form.
(ii) Subtraction of digits at one’s place, 4 – 3 = 1 one.
(iii) Subtraction of digits at ten’s place, 9 – 2 = 7 tens.
(iv) Subtracted sum = 7 tens + 1 one = 70 + 1 = 71
(v) Therefore, 94  23 = 71
The examples will help us to solve different types of problems of 2digit subtraction placing the numbers in vertical order.
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