Estimate then record the product $473x9

So because 9 and 10 are close to each other, and the fact that 10 is really easy to multiply by, you do 473 x 10 which is 4730, because you just add a 0 to the end. 
This means that an estimate is 4730 or if you want to be less specific, <4730, because 9 is less than 10. 
The actual product though is 4257. 

The Answer is 4,267
473 times 9 is 4,267 because u always multiply the number that is below the number that u are multiplying 4,267 times 9. 9 times 7 is 27 9 times 7 is 64 plus 2 is 66 and 9 times 4 is 36 so always multiply that small number with the numbers that is bigger