Question

Junior says the product of 25* 10 is 250. How can you use patterns to check junior’s answer?

Answer 1

Given problem,

25 × 10 = ?

Since, 1 × 10 = 10

2 × 10 = 20,

3 × 10 = 30,

4 × 10 = 40

..................... so on,...

When we observe this sequence,

We found that, when we multiply a number by 10 we obtain the resultant number by putting 0 in the ones place of the given number.

That is,

25 × 10 = 250

Therefore, junior is correct.

Answer 2

25 * 10 = 250

It is a multiplication. The multiplication is nothing the repeated addition.

Therefore, we add 10 +10 + 10 + 10 +10 +10 + 10 +10 +10 + 10 +10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 +10 + 10 + 10 = 250

In other words,

1*10 = 10

2*10 = 20

3*10 = 30

. . .

25*10 = 250.

Here n is the variable, n = 1 to 25.

Therefore, patttern is n *10 when n = 1 to 25.

Thank you :)