7th Grade Math

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For help with... SPI 2.7 SPI 2.7 SPI 2.7 SPI 2.7 SPI 2.7 SPI 1.4 SPI 2.7 SPI 2.5 SPI 2.7 SPI 2.5 SPI 4.1 SPI 2.7 SPI 2.7 GLE 1.4 SPI 2.7

Test Practice 313

9. Trapezoid ABCD is similar to trapezoid
   WXYZ. What is the length of
   −−
   XY?

$ # : 9

%

; 8

"

14 cm

10 cm

15 cm

F. 20 cm H. 24 cm

G. 21 cm I. 27 cm

10. GRIDDED RESPONSE Find 15 ÷ (-5).


11. The bridge structure is supported by the
    triangular braces as shown.

"'&

#%

$

Triangles ACE and ABF are similar

triangles. The scale factor is 0.5. If CE =

10 feet, what is the length of BF?

A. 2.5 ft C. 6 ft

B. 5 ft D. 12 ft

12. SHORT RESPONSE Thom has a scale
    model of his car. The scale is 1 : 12. If the
    actual car has 16-inch wheels, what size
    are the wheels on the scale model?

16 in.

13. A recipe calls for 2 _^1
    3
    packages of pudding.
    How many batches can be made if
    20 packages of pudding are available?

F. 8 batches

G. 9 batches

H. 10 batches

I. 11 batches

14. Which line contains the ordered pair (-1, 2)?
    k y
    m

n

142 3

1

2

3

4

• 2


• 4 - 3 - 2 - 1


• 3


• 4

0 x

A. line k

B. line 

C. line m

D. line n

15. EXTENDED RESPONSE Heath and Jerome
    are brothers. At the beginning of the
    school year, Heath wore a size 3 shoe and
    Jerome wore a size 5. At the end of the
    school year, Heath wore a size 4 and
    Jerome wore a size 6.
    Part A Jerome says they grew the same
    amount. Explain how he is right.
    Part B Heath thinks that he grew more.
    Explain how he is also correct.

311_313_C05_STP_895130.indd 313 12/29/09 1:11 PM