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


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c). b2 + 8 where b = 2


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d). p2 - 6 where p = 10


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e). Evaluate for n = 12:


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f). g2 + 5 where g = 15


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g). 10 - x2 where x = 3


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h). x2 - x where x = 5


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3). Find these square roots using your calculator:

a). 2.62 = ________


b). 8.412 = ________


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

4). Find these cubes:

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