Answer:
In the base ten block method we use boxes for multiplying.
For 1 we use 100-block box,
For 10 we use 1000-block box.
For example: 10 × 4,
For this we need to take 4, 1000-block boxes,
Thus, the have total single boxes = 4000
Which is equivalent to 40.
Thus, 10 × 4 = 40
By the number line method,
If we want to find 10 × 4 by the number line method.
Then we will start counting 4 10's from 0 and 4th 10's occurs at 40.
Thus, 10×4 = 40
By the place value method,
If we want to multiply a number by a number then we will split a number into its place value then multiply each place value by the given number,
For example, 52 × 10
(50+2) × 10
50 × 10 + 2 × 10 = 500 + 20 = 520
Since, all method are easy, but when we talk about large number then Place value method is appropriate to use, because we can not count total 10's from 0 for a large number like 520. Also, for large number applying base ten block method is not appropriate.
