Class 5 math exercise 1.2 ( pseb)

 

Solutions 1:

2. The face value of any digit in the

 number is the digit itself.

The face value represents the actual

 value of the digit.

2. Solution (a) : Face value of 2 is 2

 

Solution (b) : Face value of 4 is 4

Solution (c) : Face value of 8 is 8 

 

Solution (d) : Face value of 9 is 9 

 

Solution (e) : Face value of 7 is 7

 

Solution (f) : Face value of 7 is 7 

 

Solution (g) : Face value of 6 is 6

 

Solution (h) : Face

 value of 5 is 5

3. 

Solution (a) : 

2 × 100 + 3 × 10 + 2 × 1

= 200 + 30 + 2

= 232

Solution (b):

 4 × 1000 + 1 × 100 + 8 × 10 + 0 × 1

= 4000 + 100 + 80 + 0

= 4180

Solution (c) : 

2 × 10000 + 7 × 1000 + 8 × 100 + 1 × 10 + 1 × 1

= 20000 + 7000 +800 +10 +1

= 27000 +800 + 11

= 27811

Solution (d) :

8 × 10000 + 2 × 1000 + 9 × 100 + 9 × 10 + 4 × 1

= 80000 + 2000 + 900 + 90 + 4

= 82000 + 900 + 94

= 82994

Solution (e) :

 1 × 10000 + 0 × 1000 + 0 × 100 + 7 × 10 + 3 × 1

= 10000 + 0 + 0 + 70 + 3

= 10000 + 70 + 3

= 10073

Solution (f) :

 4 × 10000 + 3 × 1000 + 7 × 100 + 1 × 10 + 0 × 1

= 40000 + 3000 + 700 + 10 +0

= 43000 + 700 + 10

= 43710

solution (g) :

6 × 10000 + 1 × 1000 + 6 × 100 + 3 × 10 + 9 ×1

= 60000 + 1000 + 600 + 30 + 9

= 61000 + 600 + 30 + 9

= 61639

Solution (h) :

 2 × 10000 + 6 × 1000 + 9 × 100 + 9 × 10 + 9 × 1

= 20000 + 6000 + 900 + 90 + 9

= 26000 + 900 + 99

= 26999