The correct option is
D 200
5 x 4 x 10 can be written as:
(5 x 4) x 10
Let us first find value of 5×4.
Using the multiplication table, we get:
∴5×4=20
Now, the expression can be written as:
(5×4)×10=20×10
Let's find out the answer of 20×10
by box method.
The expanded form of 20×10 is:
Step 1: Let's draw a table.
Step 2: Fill
the table by multiplying the numbers.
Step 3: Add all the products.
So, 5×4×10 = 200