6th Grade Math Textbook, Progress

(Marvins-Underground-K-12) #1
Solve. Use simpler numbers to help you decide what to do.
0 1. Eva had $164.37 in her bank account on September 1.
She has since made four withdrawals of $18.50 and
two withdrawals of $14.25. She has also deposited a
check for $76.18. How much is in her account now?

0 2. A manufacturer makes a certain machine part that measures
26.4 cm in length. A part will pass inspection if it is no more
than 0.04 cm shorter than 26.4 cm or no more than 0.04 cm
longer than 26.4 cm. What is the shortest measure that can
pass inspection?

0 3. Andy owed Lynn $35.50. He paid back $20.75 but borrowed
$5 more. Then he borrowed $8.50. When he was paid, he
gave her $25. How much money does Andy still owe Lynn?

0 4. Ryan earned $122.75 baby-sitting. Vinnie earned $37.15 more
than that. Sharon earned $70.95 less than Vinnie. How much
money did Sharon earn?

0 5. Craig is on the school track team. He practices seven days a
week. On each of the first five days he runs 4.7 km. On the next
day he runs 6.1 km, and on the last day he runs 3.4 km. How
far does Craig run in one week?

T Sownvilleavings
DATE WITHDRAWAL DEPOSIT BAL
01 Sept06 Sept 18.50

(^0) 12 Sept 9 Sept 18.50
18 Sept 22 Sept 18.50 14.25
24 Sept 28 Sept 18.5014.25
164.37
76.18
Visualize yourself in the problem above as you
reread it. List the facts and the question.
Facts: in her account — $164.37
withdrawals — 4 $18.50; 2 $14.25
deposits — $76.18
Question:How much is in her account now?
Substitute simpler numbers.
$164.37 $160 $18.50 $20
$14.25 $10 $76.18 $80
(4 $20) (2 $10) $80 $20 $100 amount withdrawn
$160 $100 $60 balance after withdrawals
$60 $80 $140 balance plus the deposit
So there is about $140 in Eva’s account now.
Now solve the problem using the actual numbers.
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