**(3) Estimate the following product using general rule(a.) 578 * 161**

General Estimation Rule:*Round off each number to its greatest place*

So we have to multiply 600 * 200 = 1,20,000

Hence 1,20,000 is our answer

**b. 5281 * 3491**

So now we got==> 5000 * 3000 ==> 1,50,00,000

**c. 1291 * 592**

Hence, according to general approximation we get**1000 * 600 ===> 6,00,000**

**d. 9250 * 29**

**Hence 9000 * 30 ==> 2,70,000**