What is the decimal for 7 twentieths?

Answer 1

Answer: .35

Solution Method:

d = 7 / 20

d = .35

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Previous answer:

My apologies-I was thinking of twenty-seconds and all the seconds, but I didn't say TO use a calculator only that he CAN use a calculator.

Another alternative to solving the problem, which may or may not be easier, is to realize 20 is a fifth of one hundred, and by multiplying it by five you will get 100. Do the same thing to 7, because whatever you do to the bottom, you do to the top. 7x5=35. Now you have 35 out of 100, which is 0.35, and you can achieve that by dividing 35 by 100.

Writing mathematical problems out is more beneficial than using a calculator, as you learn more and remember the solution to the problem more easily.