Perform the indicated operations. Write the result in scientific notation rounded to three significant digits. \( \frac{84,000 \times 0.0004 \times 142,000}{0.002 \times 3,200} \)

c) \( 4+\frac{5}{2}-\frac{1}{3}= \)

Juan tiene 60 dulces y Pedro 12. ¿Cuánto dulces debe darle Juan a pedro para qu ambos tengan la misma cantidad de dulces? a) 7 b) 10 c) 12 d) 11

\( \frac{1}{2} \) of \( 50= \)

A homebuilder is putting new shelves in each closet he is building. He has 2,592 shelves h his inventory. If each closet needs 108 shelves, how many closets can he build? (A) 2.4 (B) 108 (C) 42 (D) 24

10. A stamp collector collected 4,224 stamps last year. He collected the same amount each month. How many stamps did he collect each month? (A) 422 (B) 352 (c) 362 (D) 252