Question

Use the formula Ekaadhikenapoorvena and Antyardeshkepi to find the answer and check using digit sums:
(1) 13 × 17 ​
(2) 22 × 28
(3) 34 × 36
(4) 91 × 99
(5) 35 × 35
(6) 42 × 48
(7) 72 × 78
(8) 93 × 97
(9) 104 × 106
(10) 105 × 105

Answer 1

Answer:

1)221

2)618

3)1224

4)9009

5)1225

6)2016

7)5616

8)9021

9)11024

1011025

Step-by-step explanation:

Step 1: Add the larger number to the unit digit of the smaller number

Step 2: Multiply the answer obtained from step 1 by 10

Step 3: Multiply the unit digits of both the numbers

Step 4: Add the answers from Step 2 and Step 3

Other ways to find:-

Step 1: Find the difference between the numbers from the closest power of 10 and multiply them.

Step 2: Add one of the two given numbers to the difference of the other number from the closest power of 10 (Subtract the closest power of 10 from the number)

Step 3: Final answer is obtained by joining the answer from step 2 and step 1