By accessing our **180 Days of Math for Sixth Grade Answers Key Day 105 **regularly, students can get better problem-solving skills.

## 180 Days of Math for Sixth Grade Answers Key Day 105

**Directions: Solve each problem.**

Question 1.

-8 – (-20) = __________

Answer:

– × – = +

-8 + 20 = 12

Question 2.

5 × 18 = ____________

Answer:

5 × 18 = 90

Question 3.

360 ÷ 6 = __________

Answer: 360 ÷ 6 = 60

Question 4.

Write the ordinal number for thirty-nine.

Answer: 39

Question 5.

\(\frac{1}{2}\) + \(\frac{2}{6}\) = __________

Answer:

Given,

\(\frac{1}{2}\) + \(\frac{2}{6}\)

The denominators of both the numbers are different.

LCM of 2 and 6 is 6.

\(\frac{1}{2}\) × \(\frac{3}{3}\) + \(\frac{2}{6}\)

\(\frac{3}{6}\) + \(\frac{2}{6}\) = \(\frac{5}{6}\)

Question 6.

8 – (7 + 6 – 5) + 4 = ___________

Answer:

8 – (7 + 6 – 5) + 4

8 – (13 – 5) + 4

8 – 8 + 4 = 4

Question 7.

323 – = 125 + 176

Answer:

125 + 176 = 301

323 – 301 = 22

So, the unknwon number is 22.

Question 8.

Find y.

15y = 60

y = __________

Answer:

Given,

15y = 60

y = 60/15

y = 4

Question 9.

18 inches = __________ yards

Answer:

Convert from inches to yards

1 inch = 0.02 yards

18 inches = 18 × 0.02 = 0.5 yards

Thus, 180 inches = 0.5 yards

Question 10.

How many degrees are in a right angle?

Answer: A right angle is 90 degrees.

Question 11.

What is the median of this set of data?

105, 90, 82, 99, 93

Answer:

First, we have to arrange the given data in ascending order.

82, 90, 93, 99, 105

The median is 93.

Question 12.

If this pattern is continued until there are 50 rhombuses, how many matches will form the perimeter of the whole pattern?

Answer: 151