© 2007 M. Tallman Jenny uses ¼ of her flour to make cookies. She had X cups of flour. How many cups of flour did she use? There are 640 students in a.

© 2007 M. Tallman

© 2007 M. Tallman

Jenny uses ¼ of her flour to make cookies. She had X cups of flour. How many cups of flour did she use?

There are 640 students in a school. If there are s students in each classroom, how many classrooms are there ?

f

=

X

×

¼

c

=

s

÷

640

© 2007 M. Tallman

Kelly eats .5 of her birthday cake. Her cake was divided into y equal pieces. How many pieces did she eat?

Megan has 48 pieces of candy. There are x pieces in a box. How many boxes of candy does she have?

p

=

y

×

.5

b

=

x

÷

48

© 2007 M. Tallman

t × 6 6t 11 × b 11b c × 7 7c

22 × f 22f

© 2007 M. Tallman

) 93 ) 124

93

124

3 ways to represent a division in 3 ways to represent a division in math…math…

fraction

division bar

12 ÷ 49 ÷ 3symbol

© 2007 M. Tallman

b ÷ 7

55 ÷ p

r ÷ 8

9 ÷ f

b 7

p55

r 89 f

x 5g 7x 5g

Evaluate means solve.

g, = 7

x 5g = 35

21÷ 3c ÷ 3c 21

Evaluate means solve.

c, =

÷ 3c = 7

q x 6, q = 8

p ÷ 8, p = 56

2 ½ x f, f = 2

b ÷ 3.5, b = 7

28 ÷ y, y = 7

48

7

5

2

4

© 2007 M. Tallman

?

Justin purchases 4 new books every month. How many books will he have after 4 months ?

28

1 Month

2 Months 3 Months 4 Months

O Months

164

7

123

82

41

00

bm

m = monthsm = monthsb = booksb = books

Rule ? Rule: b = m x 4or, m = b ÷ 4

© 2007 M. Tallman

Rule: b = m x 4

or, m = b ÷ 4

(b = 4m)

(m = )b4

28

164

7

123

82

41

00

bm

b = booksb = booksm = monthsm = months

Use the function rules to answer these questions:

How many books will Justin have after 10 months?

Justin has 32 books. How many months have passed?

How many books will Justin have after 6 months?

Justin has 48 books. How many months have passed?

40

8

24

12

© 2007 M. Tallman

126

105

84

63

42

21

# of Cubes (c)

Element # (e)

1 2 3

4 5 6

Rule: c = e × 2 or, e = c ÷ 2

Rule ?

© 2007 M. Tallman

Rule: c = e x 2

or, e = c ÷ 2

(c = 2e)

(e = )c2

Use the function rules to answer these questions:

How many cubes are in element 24?

Which element has 36 cubes?

How many cubes are in element 50?

Which element has 90 cubes?

48

18

100

45 126

105

84

63

42

21

# of Cubes (c)

Element # (e)