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Name Properties of Addition Dimensional Analysis 1

. A pound

Sec

of margarine costs $1.39. What is the cost of a kilogram of margarine?

(1 lb = 456.3

g

1 kg

= 1000 g)

2.

Simplify each expression. Use properties to make it easier, but be sure to show your thinking!

a.

(-4+9)+(-9+4)

b. (m+11)+(n+44)

c.

-17 + (x + -13)

d.

f.0+-93.2)+93.2

e. -(-7)

s

^1,

*

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3. Tell which

a.

,

(e + -26) + (24 + 2f)

h'-Y*o

property is illustrated by each sentence:

(5+7v)+-16=5+(7v+-'16)

b. (9+4w)+(Br+33)=1Br+33)+(9+-4w)

c. (-7+8a)+9a=-7+(8a+9a)

d.

(-17 + a) + -(-17 + a) = 0

s.6+(4b-4b)=3

f.

give the additive inverse of

-k

4.

Solve each equation:

a.-12+y=-241

b. c+14=60

c. -173+m=209

d. 15.2=t+2.15

5. Set up each situation

and simplify:

a. Clairec ollects and trades old cds.

She now as 240 of

them.

lf she sells n of them and then buys iwice as many as

she sells, how many cds will she have?

b. Write an equation to express the area of the largest rectangle in terms of the areas of smaller rectangles.

X inl 6in

.rii

La tn L

iB io, 9in c. d.

Find x

Find the dimensions of each of the smaller rectangles.