Idon't know how to estimate, someone explain how to estimate !
e. g
multiplication problem: 325*883=? ?
estimate:

Hi There!

To estimate multiplications you have to round them, 325 rounded is 300 and 883 rounded is 900. Whenever you round in multiplication you look at the tens place, when the tens place is less than 5 then the number will decrease, when it is greater than 5 the number increases. So basically in this problem you are multiplying 900*300, you're final answer should be 270000. This is how estimating in multiplication works.

Have A Day!

Ican't do any of the other stuff, but i can get you started. the answer, i believe, is $2.50.

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!