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

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?
________________
175+89 = 264.

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

Question 2.
6 • -6 = ______
6 × -6 = -36.

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

Question 3.
28 ÷ 4 = ___
28 ÷ 4 = 7.

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

Question 4.
Is 27 a prime number? _____
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 ___
$$\frac{3}{8}$$ 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 = ____
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 = _____
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 = _______
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.
________________ 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?
________________
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
________________ 