Question

Find the missing number in the given lattice multiplication.

• A. 7
• B. 3
• C. 5
• D. 8

Answer 1

The correct option is A 7

We know that in box method of multiplication, the number at the top of columns are mutliplied with the numbers at the left of the box to fill the boxes.

The missing number is at the top of second column.

So, for first row: 10 times the missing number = 70
Thus, missing number = 70 ÷ 10 = 7

Similarly for second row: 6 times missing number = 42
Thus, missing number = 42 ÷ 6 = 7

Hence, the missing number = 7