Rice is sold in 75 gram packs and 120 gram packs. The masses of both packs are given correct to the nearest gram. Calculate the lower bound for the difference in mass between the two packs

b) \( 1 \div \frac{2}{9} \)

Test Practice 17. Becka made 2 cards. She drew 3 balloons on each card. Each balloon had 3 stars. How many stars did Beckg use on her cards altogether? \( \begin{array}{ll}\text { (A) } 15 \text { stars } & \text { (C) } 17 \text { stars } \\ \text { (B) } 16 \text { stars } & \text { (D) } 18 \text { stars }\end{array} \)

\( (-\frac{8}{9}).(-\frac{27}{2}) \)

15. \( \frac{1}{15}+\frac{6}{5} \div \frac{12}{7} \)

Mrs. Andrew's classroom has 4 rows of desks with 3 desks in each row. She placed 2 pencils on each desk. How many pencils did Mrs. Andrew place on the desks altogether?