Advertisements
Advertisements
Question
Work out the following multiplication.
12345679
× 9
Use the result to answer the following question.
What will be 12345679 × 63?
Solution
12345679
We have, × 9
111111111
Here, we observe that in the product all the digits are same i.e. 1, which is actually the unit digit of the product 9 × 9. Also, total of digits in the multiplier is 90°.
We have to compute the value of 12345679 × 63.
Here, sum of the digits of the multiplier is 9 and unit’s digit of the product is 9 and unit’s digit of the product of 3 × 9 is 7.
∴ 12345679 × 63 = 777777777
APPEARS IN
RELATED QUESTIONS
Find the values of the letters in the following and give reasons for the steps involved.
A B
+ 3 7
------
6 A
------
Find the values of the letters in the following and give reasons for the steps involved
A B
x 3
-------
C A B
-------
Find the values of the letters in the following and give reasons for the steps involved.
A B
x 6
-------
B B B
-------
Find the values of the letters in the following and give reasons for the steps involved.
1 2 A
+ 6 A B
---------
A 0 9
---------
If 1AB + CCA = 697 and there is no carry-over in addition, find the value of A + B + C.
Find the value of the letters in the following question.
B A A
+ B A A
3 A 8
Find the value of the letters in the following question.
A A
× A
C A B
Find the value of the letters in the following question.
A B
– B 7
4 5
If 2A7 ÷ A = 33, then find the value of A.
Work out the following multiplication.
12345679
× 9
Use the result to answer the following question.
What will be 12345679 × 45?
