9) Con las pesas de \( 2 \mathrm{~kg}, 4 \mathrm{~kg}, 5 \mathrm{~kg} \) y 10 kg ¿Cuántas pesadas diferentes se podrán realizar en una balanza? \( \begin{array}{llll}\text { A) } 8 & \text { B) } 10 & \text { C) } 12 & \text { D) }\end{array} \)

2. \( 235-89= \)

If the numerical value of 5, 5.0, and 5.00 are the same, why is it necessary to include the zeros in measurements?

mixed numbers. \( \begin{array}{ll}\text { (7) } \frac{18}{3}= & \text { (11) } \frac{19}{3}= \\ \text { (8) } \frac{10}{2}= & \text { (12) } \frac{7}{6}= \\ \text { (9) } \frac{37}{6}= & \text { (13) } \frac{55}{4}= \\ \text { (10) } \frac{27}{8}= & \text { (14) } \frac{99}{5}=\end{array} \)

(a) What was the TOTAL cost of the stamps? (b) She had to post a parcel and the total cost of postage was \( \$ 25.70 \). What stamps can she select from the collection, to make up this amount if she must use (i) as many \( \$ 4.00 \) stamps as possible? (ii) all her \( \$ 1.00 \) stamps? 3 marks) (c) 2 marks) (i) What is the LARGEST number of stamps that she can use from the collection (ii) List the selection of stamps she can use. 3 marks)

Evaluate \(\sqrt ( \frac { 0.0961} { 4.0836- 3.7112} ) \) , correct to four decimal places, hence write the answer in the right form.