# Tag Archives: grade 8 mtap reviewer with answers

## Grade 8 MTAP 2015 Elimination Questions with Solutions – Part 5

This is the fifth part (questions 41-50) of the solutions of the Grade 8 MTAP 2015 Elimination Questions. You can read the solutions for questions 1-10 11-20, 21 – 30, and 31 – 40

41.) If $f (2x) = 2 - 3x$, what is $f(10)$?

Solution
$2x = 10$, $x = 5$.
$f(10) = 3 - 3(5) = -13$

42.) What is the equation of the line that is parallel to $2x + 5y + 6 = 0$ and passes through $(1, 1)$?

Solution

Parallel lines have the same slope, so we get the slope of the given line. That is,

$2x + 5y = -6$
$5y = -2x - 6$
$y = \frac{-2}{5}x - \frac{6}{5}$

So, the slope of the given line is $-\frac{2}{5}$Continue reading

## Grade 8 MTAP 2015 Elimination Questions with Solutions – Part 1

Below is the first part of the Grade 8 MTAP 2015 Elimination Questions with Solutions and answers. If you find any errors, please comment on the box below.

1.) Find the average of the numbers -1, 3/2, and 1/2.

Solution

(- 1 + 3/2 + 1/2)/3 = 1/3

2.) How much larger is 2/3 than 1/6?

Solution
2/3 – 1/6 = 4/6 – 1/6 = 3/6 = 1/2

3.) If one ream contains 500 sheets of paper and a sheet of paper is 0.3 mm thick, how thick is one ream in meters?

Solution

500 × 0.3mm = 150 mm = 0.15m

4.) What is the second largest number among numbers $\sqrt{2}$, 3/2 , 1.4, $\sqrt{3}$ and 1.6?

Solution

$\sqrt{2}$ is around 1.41 and $\sqrt{3}$ is around 1.7.

5.) If an inch is about 2.54 cm, what is 1 cm to the nearest hundredth of an inch?

Solution

$1:2.54 = x: 1, x = 0.39$

## 2015 Grade 8 MTAP Math Challenge – Division Orals

Below are the 2015 Grade 8 MTAP Math Challenge Division Oral Competition questions with answers.

15-second question (2 points each)

1.) What is the slope of the line that passes through the points (-1, 0) and (1, -6)?

2.) Which one is the largest, 3.2, 10/3, π?
5.) If $f (x) = 2 - x - x^2$, what is $f (-1) + f (0)$?
6.) Factor completely the algebraic expression $a^2b -bc^2$.
Answer: $b(a - c) (a + c)$  Continue reading