Page 50 - Maths Class 04

Step 2. Now, write the numbers outside the lattice as shown :
3 8

4

7

Step 3. Now, fill in the products of the digits of two numbers as shown :

3 8 3 8 3 8 3 8

3 1 3 1 3 1 3
4 4 4 4
2 2 2 2 2 2 2

5 2 5
7 7 7 7
6 1 6

Step 4. Now, add the diagonals as shown :

3 8 3 8 3 8 3 8

1 3 1 3 1 3 1 3
4 4 4 1 4
2 2 2 2 2 2 2 2

2 5 7 2 5 7 7 2 5 7 7 2 5 7
1 6 1 6 1 6 1 6

6 8 6 8 6 8 6

So, the product is 1786.

Example : Multiply 125 by 28. Write 125 on the top of the
lattice and 28 on the left.

Solution : Draw the lattice.
1 2 5

2

8

Mathematics-4 50