Changing Fractions To Decimals On A Calculator Worksheet Page 2
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9Lesson 7
Angles of a Quadrilateral
The sum of the 4 angle measurements of a quadrilateral is always 360°. This is easy to
remember for squares and rectangles, because 4 angles × 90° = 360°. But it is also true of these
quadrilaterals:
60
70
120
110
60°
60
90
+120
+90
70°
360
360
120°
120°
110°
60°
90°
90°
Add the angle measurements of EFGH and IJKL.
E
F
I
J
100°
80°
115°
115°
65°
65°
80°
100°
L
K
H
G
10. a. Sum:
°
b. Sum:
°
W
R
e
e m e m b e r
Find the sales tax and total bill for each amount.
11.
purchase
$ 4 8 . 0 0
12.
purchase
$ 8 6 . 5 0
a. 6% sales tax
$
a. 8% sales tax
$
b. total bill
$
b. total bill
$
Convert the metric units.
kilo
hecto
deca
deci
centi
milli
13. a. 760 mg =
g
b. 28 mm =
cm
c. 840 g =
kg
25
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