7th Grade Math

6 Start Smart

Use the four-step plan to solve each problem.

1. SCIENCE The table shows the average Bones in a Human Leg
   Bone Length (in.)
   Femur (upper leg) 19.88
   Tibia (inner lower leg) 16.94
   Fibula (outer lower leg) 15.94

lengths of the bones in a human leg.

How much longer is the average femur

than the average tibia?

2. FINANCIAL LITERACY Terry opened a
   savings account in December with $150
   and saved $30 each month beginning in
   January. Calculate the value of Terry’s account at the end of July.


3. GEOMETRY Numbers that can be represented by a triangular arrangement
   of dots are called triangular numbers. The first five triangular numbers are
   shown below. Describe the pattern in the first five numbers. Then list the
   next three triangular numbers.

15

1 3 6 10

4. SCHOOL The Boosters expect 500 people at the annual awards banquet. If
   each table seats 8 people, how many tables are needed?


5. PATTERNS The sequence 1, 1, 2, 3, 5, 8, ... is called the Fibonacci sequence.
   List the next three numbers in this sequence.


6. TRAVEL A commuter train departs from a train Commuter Train Schedule
   Departure Arrival
   6:30 A.M. 6:50 A.M.
   7:15 A.M. 7:35 A.M.
   8:00 A.M. 8:20 A.M.
   8:45 A.M. 9:05 A.M.
   9:30 A.M. 9:50 A.M.

station and travels to the city each day. The

schedule shows the first five departure and

arrival times.

a. How often does the commuter train arrive

in the city?

b. What is the latest time that passengers can

depart from the train station if they need to

arrive in the city no later than noon?

7. MOVIES The table shows the concession stand prices, including tax, at
   Mega Movies. Marlon ordered 2 medium drinks and 1 large popcorn. He
   gave the cashier $10. How much change should he receive?

Mega Movies MenuMega Movies Menu

small $1.99

medium $2.75

large $3.50

Drinks

small $2.49

medium $3.50

large $3.95

Popcorn

Real-World Link

The numbers in

the Fibonacci

sequence can be

observed in a

pinecone. There

are usually 34

spirals of seed

heads going one

way and 55 going

the other.

RRRRRRRRR

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