This math review document provides answers and explanations for various math problems involving converting between number systems, identifying patterns and rules, calculating areas and perimeters of shapes, working with expressions and equations, and evaluating expressions. It includes converting between Egyptian, Chinese, and Mayan numerals; matching number sequences to their rules; finding areas and perimeters of rectangles and triangles; calculating interest; writing algebraic expressions; and evaluating expressions with variables.

1. Answers for Math Review for Period Exam
Note: This is just a review, you need to study every lesson (from fractal and algebra
book and notes from notebook) seen during class.
Answer
Convert the following numbers to Egyptian numerals.
a) 12 b) 101 c) 1011
Convert the following numbers to Chinese numerals.
a) 12
c) 1011
b) 255
Convert the following numbers to Mayan numerals.
a) 12
b) 255
c) 1011

2. Match the sequence with its rule.
a) 2n + 1 5, 12, 19, 26…
b) 3n - 1 5, 10, 15, 20…
c) 5n-2 3, 8, 13, 18…
d) 5n + 0 3, 5, 7, 9…
e) 7n - 2 2, 5, 8, 11…
Draw the line of symmetry for each pair of figures.
Find the area and perimeter of each figure.
1. 3.
36yd.
8 ft.
Area: 200.96 squared feet Area: 4069.44 squared yard
Perimeter: 50.24 ft. Perimeter: 226.08 yd.
2. 4.
7 ft. 6 ft.
10 ft.
Area: 70 squared feet Area: 36 squared feet
Perimeter: 34 ft. Perimeter: 24 ft.
Calculate the interest. (I=PRT)
Sarah has $$480 in her saving account earning 4.25% interest. How much interest
will she earn in 2.5 years? $51.00

3. Bianca borrowed $120 for 9 months at 3.5% interest. How much interest will she
pay? What is the total amount she will pay back?
Interest: $3.15
Total amount: $123.15
A store allows customers 1 year to pay for their purchases, but it charges 14%
interest. How much interest would be charged on a purchase of $620? What is the
total amount the customer would pay?
Interest: $86.80
Total amount: $706.80
Write each as an algebraic expression.
The difference of 10 and 5 x increased by 6
10 - 5 x+6
The sum of q and 8 Twice q
q+8 2q
Evaluate the expression.
The product of 10 and 8. The quotient of 96 and 8 Twice 6
80 12 12
m +p ÷5, when m=1 and y + 9 – x, when x=1 y÷2 + x, when x=1 and
p=5 and y=3 y=2
2 11 2
a – 5 – b, when a=10 and z(x+y), when x=6, y=8 z – (y÷3-1), when y=3 and
b=4. z=7
and z=6
1 84 7

4. Evaluate.
3(6+7) 72 ÷ 9 + 7 48 ÷ (4+4)
39 15 6
20 ÷ [4 - (10-8) ] 9+8-7 40 ÷ 4 - (5 – 3)
10 10 8
Complete the following line segments. Write the missing numbers.