Download 1.1 - Weatherly Math Maniacs

1.1
The areas of two circles are 256pi
and 225pi square units. How
many units are in the sum of the
circumferences of the two circles?
Leave pi in your answer
1.1 answer
62pi
1.2
What is the one’s digit in the sum
3+
2
3
3+
5
5 ?
1.2 Answer
0
1.3
If 3(2x – 5) = 4 – x, what is the value of x
written as a mixed number?
1.3 answer
5
2
7
1.4
Zaki borrowed 15 quarters from Lars. The
next day Zaki gave Lars 53 nickels. If Zaki
pays the remainder in dimes, how many
dimes does he owe Lars?
1.4 answer
11
1.5
If a  b  3ab  a , find 4 5.
3
2
1.5 answer
1484
2.1
If a side of the square is
8 units and the
hypotenuse of the
right triangle is 17
units, how many units
are in the perimeter of
the trapezoid shown
in the figure?
2.1 answer
56
2.2
Evaluate
5  2  (5  2)
3
3
2.2 answer
1040
2.3
Solve for x.
x  9  16 
4  9  16
2.3 answer
56
2.4
The lengths of three sides of a square total
66 cm. If a circle is inscribed in the square,
find the area of the circle in square cm.
Leave pi in your answer.
2.4 answer
121
2.5
Evaluate
1 + 2 – 3 + 4 + 5 – 6 + … + 13 + 14 - 15
2.5 answer
30
3.1
What is the sum of the terms
in the sequence of numbers
-32, -30, -28, …, 36, 38 ,40
3.1 answer
148
(There are 17 pairs with sum of 8
so 17*8 = 136. Then 6, 4, 2
remain making + 12.
136+12 = 148)
3.2
• How many positive multiples of three that
are not even integers are less than 100?
3.2 answer
17
(count # of odd mults of 3
from 3 to 99)
3.3
What time will it be 4860 seconds
after 8:40 p.m.?
3.3 answer
10:01 p.m.
(4860 div by 60 = 81 minutes =
1 hr 21 mins
8:40 + 1:21 = 10:01)
3.4
How many positive integers factors does
5400 have?
3.4 answer
48
Prime factor: 5400 = 33 x 23 x 52
Exponents + 1 each = 4, 4, 3
Multiply: 4x4x3 = 48
3.5
How many diagonals are in a 24-gon?
3.5 answer
252
24(23) div by 2 = 276
276 – 24 = 252
4.1
The area of a triangle is 75 square inches.
What is the length of the base in inches if
the height is 12 inches?
4.1 answer
1
25
12.5 or 12 or
2
2
4.2
Meghana flips a coin four times. If order
does not matter, what is the probability
that she gets two heads and two tails?
4.2 answer
3
8
4.3
What is the sum of the mode and the
median of the numbers listed below?
88, 85, 81, 75, 78, 81, 88, 95, 93, 81, 90
4.3 answer
166
4.4
If 11a + 4b = 99 and 6a + 13 b = 37,
what is the value of a+b?
4.4 answer
8
4.5
The circumference of a circle is 12pi cm.
Find the radius of the circle rounded to the
nearest square cm.
4.5 answer
6
Extra #1
The length of a side of a regular octagon is
what percent of its perimeter?
Extra 1 - answer
12.5%
Extra #2
What is the sum of the number of all edges
and vertices for a square-based pyramid?
Extra #2 - answer
13