Question

Find the value of the missing digits in the subtraction table given below.

• A. A = 8
  B = 1
  C = 9
• B. A = 1
  B = 4
  C = 8
• C. A = 0
  B = 8
  C = 1
• D. A = 8
  B = 4
  C = 1

Answer 1

The correct option is D A = 8

B = 4
C = 1
Let us start from the digit at the rightmost place.

$\underset{–}{\text{Ones place:}}$
5 ones − 4 ones = C one
$⟹C=1$

$\underset{–}{\text{Tens place:}}$
$A$ tens − 5 tens = 3 tens

But 8 tens − 5 tens = 3 tens
$⟹A=8$

$\underset{–}{\text{Hundreds place:}}$
8 hundreds − 7 hundreds = 1 hundred

$\underset{–}{\text{Thousands place:}}$
9 thousands − $B$ thousands
= 5 thousands

But 9 thousands − 4 thousands
= 5 thousands
$⟹B=4$

$\underset{–}{\text{Ten thousands place:}}$
8 ten thousands − 0 ten thousand
= 8 ten thousands


$\therefore A=8,B=4,andC=1$