Question

Describe the mental math steps you would use to find 7(42)

Answer 1

Answer:

$7\times 42 = 294$

Step-by-step explanation:

Distributive property of multiplication over addition:

When a number is multiplied to a sum of two numbers then it can be multiplied to the numbers individually and then add the two products,

It can be written as:

$a\times (b+c) = (a\times b) + (a\times c)$

Similarly, we can use this property to find the product of $7\times 42$

$7\times 42\\= 7\times (40+2)\\= (7\times 40) + (7\times 2)\\= 280 + 14\\= 294$

The product of 7 and 42 is 294.

Answer 2

You would find 7*40    7*4=28
So 7*40=280 (just add a zero)
7*2=14
The answer would be 280+14=294