Describe the mental math steps you would use to find 7(42)
You would find 740 74=28
So 740=280 (just add a zero)
72=14
The answer would be 280+14=294
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.