By accessing our **180 Days of Math for Sixth Grade Answers Key Day 28 **regularly, students can get better problem-solving skills.

## 180 Days of Math for Sixth Grade Answers Key Day 28

**Directions Solve each problem.**

Question 1.

What is the sum of 175 and 89?

________________

Answer:

175+89 = 264.

Explanation:

The sum of 175 and 89 is 175+89 = 264.

Question 2.

6 • -6 = ______

Answer:

6 × -6 = -36.

Explanation:

The product of 6 and -6 is 6×-6 which is -36.

Question 3.

28 ÷ 4 = ___

Answer:

28 ÷ 4 = 7.

Explanation:

The division of 28 by 4 we will get 28 ÷ 4 = 7.

Question 4.

Is 27 a prime number? _____

Answer:

No.

Explanation:

No, 27 is not a prime number. As 27 is divisible by 1, 3, 9, and 27.

Question 5.

\(\frac{3}{8}\) of 40 is ___

Answer:

\(\frac{3}{8}\) of 40 is 15.

Explanation:

Given that \(\frac{3}{8}\) of 40 which is

= \(\frac{3}{8}\) × 40

= 3 × 5

= 15.

Question 6.

100 – (9 – 3)^{2} = ____

Answer:

100 – (9 – 3)^{2} = 64.

Explanation:

Given the expression is 100 – (9 – 3)^{2} which is

100 – (9 – 3)^{2} = 100 – (6)^{2}

= 100 – 36

= 64.

Question 7.

Find z.

126 + z = 259

z = _____

Answer:

z = 133.

Explanation:

Given the expression is 126 + z = 259, so z is

z = 259 – 126

= 133.

Question 8.

Solve for a if 29a = 87. a = _______

Answer:

a = 3.

Explanation:

Given the expression is 29a = 87, a is

a = \(\frac{87}{29}\)

= 3.

Question 9.

Calculate the perimeter of the regular octagon.

________________

Answer:

The perimeter of the regular octagon is 16 cm.

Explanation:

The perimeter of the regular octagon is 8a, so

Perimeter = 8×2

= 16 cm.

Question 10.

How many sides does a quadrilateral have?

________________

Answer:

4 sides.

Explanation:

There are 4 number of sides a quadrilateral has.

Question 11.

What is the outlier in this data set?

23, 31, 28, 73, 19

________________

Answer:

73.

Explanation:

The outlier in the data set is 73.

Question 12.

List the shapes in order of size from smallest area to largest area.

_______________________

Answer: