Lesson 21 In-class exercise

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 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 = _______

a). 3² =	b). 4² =	c). 5² =
d). 6² =	e). 7² =	f). 8² =

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 _________

a). 2.6² = ________	b). 8.41² = ________
c). .06² = ________	d). 1.01² = ________