Year 1 Lesson 21 In-class Exercise

Name ________________________

1). Find these squares:

a). 32 = ______


b). 42 = ______


c). 52 = ______


d). 62 = ______ e). 72 = ______ f). 82 = ______

2). Evaluate these expressions:

a). x2 where x = 9


_________ 		b). a2 - 1 where a = 6


_________ 		c). b2 + 8 where b = 2


_________
d). p2 - 6 where p = 10


_________ 		e). Evaluate for n = 12:


_________ 		f). g2 + 5 where g = 15


_________
g). 10 - x2 where x = 3


_________ 		h). x2 - x where x = 5


_________

3). Find these squares using your calculator:

a). 2.62 = ________


 b). 8.412 = ________


c). .062 = ________
 d). 1.012 = ________

4). Find these cubes:

a). 33 = _______ b). 53 = _______ c). 83 = _______