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# Estimation

Which of the following is closest to

$123,456,789 \times 987,654,321 ?$

(A) $$\ \ 1.0 \times 10^{15}$$
(B) $$\ \ 1.0 \times 10^{16}$$
(C) $$\ \ 1.0 \times 10^{17}$$
(D) $$\ \ 1.0 \times 10^{18}$$
(E) $$\ \ 1.0 \times 10^{19}$$

If Kevin has $$25$$ quarters, $$3$$ dimes, $$5$$ nickels, and $$2$$ pennies in his pocket, approximately how much money does he have?

(A) $$\ \ 2.5$$
(B) $$\ \ 6.25$$
(C) $$\ \ 6.8$$
(D) $$\ \ 25.35$$
(E) $$\ \ 680$$

NOTE: One quarter is $$0.25,$$ one dime is $$0.1,$$ one nickel is $$0.05,$$ and one penny is $$0.01.$$

If Jane gets $$99$$% on her math test, Tom gets $$89$$% and James gets $$71$$%, what is their approximate average score?

(A) $$\ \ 77$$%
(B) $$\ \ 80$$%
(C) $$\ \ 86$$%
(D) $$\ \ 89$$%
(E) $$\ \ 94$$%

The above pie chart shows the number of men, women and children who attended a State Fair. What is the ratio of women to children?

(A) $$\ \ 9:4$$
(B) $$\ \ 4:9$$
(C) $$\ \ 3:2$$
(D) $$\ \ 2:3$$
(E) $$\ \ 1:1$$

What is the best approximation of $$\sqrt{96}+\sqrt{124}?$$

(A) $$\ \ 19$$
(B) $$\ \ 20$$
(C) $$\ \ 21$$
(D) $$\ \ 22$$
(E) $$\ \ 23$$

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