8 th grade ciphering. sample evaluate 10.1 × 5.3
TRANSCRIPT
8th Grade Ciphering
Sample
Evaluate
10.1 × 5.3
Sample Answer
53.53
1-1
Solve
0.4x = 2x + 1.2
1-1 Answer
-0.75 or
1-2
Find the value.
(−10×5)(18)(−7+7)(−5×10)(2)
1-2 Answer
0
1-3
Solve. Express answer as decimal.
(14 + 12 − 15 − 110 + 35)2
1-3 Answer
1.1025
1-4
Simplify the expression.
(6a + 3b) - (a – 2b)
1-4 Answer
or3
1-5
Find the third side of a triangle if the perimeter is 134 and the two sides
each measure 34.
1-5 Answer
64 or 64.75
Extra 1
Solve. The quotient of a number and -3 is greater than the
quotient of 5 and 6.
Extra Answer
x < or
x < -2
2-1
The ratio of Mike’s age to his brother John’s age is 2:3. In ten years, the
ratio will be 4:5. How old is Mike?
2-1 Answer
10
2-2
Solve6 = d -
2-2 Answer
7
2-3
A cheetah can run about 5 times as fast as a squirrel. What
percent is this?
2-3 Answer
550%
2-4
If f(x) = 4x – 3 and
g(x) = 8x + 2 find f [g(-8)]
2-4 Answer
-251
2-5
Write an equation in slope-intercept form for
the line that passes through the points (-1,2)
and (5, -10).
2-5 Answer
y = -2x
Extra 2
The area of a rectangle is 432 cm² and the
length is 36 cm. What is the width?
Extra 2 Answer
12 cm
3rd Cipherer
3-1
Solve the system of equations.
x + 4y = 33y = -3x
3-1 Answer
(-3, 9)
3-2
What is the greatest number in the set
{19%, , 0.155, }
3-2 Answer
19%
3-3
Find the LCM between
18xy² and 10y
3-3 Answer
90xy²
3-4
Solve1 + y = 1.6
3-4 Answer
or 0.35
3-5
Find the area of a triangle with a base of 12 feet and a height
of 4.4 feet.
3-5 Answer
26.4 ft²
Extra 3
Roberto wants to buy a new ski jacket that costs
$96. If the total cost, including tax, is $101.28,
what is the percent of sales tax?
Extra 3 Answer
5.5%
4th Cipherer
4-1
Solve
3.14 × ()²
4-1 Answer
153.86
4-2
Evaluate if a = 3, b = 5, and c = 4.
4(2a - c³)²
4-2 Answer
13, 456
4-3
Shane’s bowling scores in five games were 124, 135, 109, 116, and 141. If the mean of Shane’s scores
after the sixth game is 130, what was his score for the
sixth game?
4-3 Answer
155
4-4
What polynomial would you add to
3y² - 4y + 2 to have a sum of 2y² + 5?
4-4 Answer
-y² + 4y + 3
4-5
Richard rowed a canoe 3 miles in hour. What is his average speed in miles per hour?
4-5 Answer
7 miles per hour
Extra 4
Convert 20 miles per gallon to
kilometers per liter
Extra 4 Answer
8.50 kilometers per
liter