What could be a general rule to multiply a number by 101 and write the product in one line? Extend Class 8

What could be a general rule to multiply a number by 101 and write the product in one line? Extend Class 8

Question 1.

What could be a general rule to multiply a number by 101 and write the product in one line? Extend this rule for multiplication by 1001,10001,... Class 8

Solution:

Yes. Rule is :

Question 2.

Use this to find (i) 89 × 101, (ii) 949 × 101, (iii) 265831 × 1001, (iv) 1111 × 1001, (v) 9734 × 99 and (vi) 23478 × 999. Class 8

Solution:

(i) 89 × 101 =

(ii) 949 × 101 =

(iii) 265831 × 1001 =

So, 265831 × 1001 = 266096831

(iv) 1111 × 1001 =

So, 1111 × 1001 = 1112111

(v) 9734 × 99 =

So, 9734 × 99 = 963666

(vi) 23478 × 999 =

So, 23478 × 999 = 23454522