Directed Numbers Quiz

Calculate (+23) − (+10) + (−18)

(a) Which of the above numbers are positive numbers?

(b) Which of the above numbers are negative numbers?

(a) Wendy buys 9 pens.

• +9

• -9

(b) Wendy sells 11 pens.

• +11

• -11

(a) Walking 80 m to the left

• -80

• +80

(b) Walking 150 m to the right

• -150

• +150

(c) Not walking

(a) Use directed numbers to represent the following situations. (i) 6 books are borrowed from the library.

• +6

• -6

(ii) 3 books are returned to the library.

• +3

• -3