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Old 12-28-2011   #7
Redfirex
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Default The answers

Quote:
Originally Posted by Jonathan W View Post
1.) 4,521 x 613 =

A 1,771,373

B 1,871,373

C 2,871,373

D 2,771,373


2.) 4/5 - 1/2 =

A 3/10

B 2/5

C 1/10

D 3/5


3.) How many integers between 1 and 50 contain the digit 3?

A 12

B 14

C 15

D 18


4.) A middle school has 116 students enrolled in four classes. If there is an equal number of students in each class, what is a way to determine the number of students in 6th grade?

A subtract 4 from 116

B add 116 to 4

C divide 116 by 4

D multiply 116 by 4


5.) The price of shirts in a store is $20 and the price of ties in the same store is $15. A customer buy 2 shirts and 3 ties during a sale when the price of shirts is discounted 15% and the price of ties is discounted 10%. How much did the customer save due to the sale?

A $10.50

B $11.00

C $11.50

D $12.00


6.) If n is an odd integer, which of the following must be an even integer?

A n - 1

B 2n + 1

C 2n - 1

D n - 2


7.) Sorry, needs picture.


8.) The price of wheat was $5/bushel on January 2007 and $9/bushel on January 2008. By what percentage did the price change?

A 20%

B 40%

C 60%

D 80%


9.) Which of the following is equivalent to 42/9?

A 21/5

B 42/3

C 14/9

D 14/3


10.) Sorry, needs picture.
1.) 4,521 x 613 = 2,771,373 (B)

Work: 4,521
613
------
13563
45210
+ 2712600
---------
2771373

2.) 4/5 - 1/2 = 3/10 (A)


Work: 4/5 = 8/10
- 1/2 = 5/10
----------------
3/10

3.) 14 (B)

The digits are: 3, 13, 23, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 43

4.) Divide 116 by 4. (C)

There is 29 children in 6th grade.

5.) The customer saved $10.50 due to the sale. (A)

Work: $6.00 + $4.50 = $ 10.50

6.) If n is an odd integer than n - 1 must be an even integer. (A)

Example: If n = 31 (Odd Number) than 31 - 1 = 30 (Even Number)

7.) Not available.

8.) It changed less than 50% so C and D are not the answer. It changed almost 50% so it changed 40%. (B)

9.) 42/9 = 14/3. (D)

Work: You have 42/9. Divide the numerator and the denominator by 3. You get 14/3

10.) Not available.

Last edited by Redfirex; 12-29-2011 at 03:20 PM.. Reason: Mistake in spelling.