By accessing our **180 Days of Math for Fifth Grade Answers Key Day 68 **regularly, students can get better problem-solving skills.

## 180 Days of Math for Fifth Grade Answers Key Day 68

**Directions Solve each problem.**

Question 1.

41 – 9 = ___

Answer: 32

Explanation:

By subtracting smaller number 9 from bigger number 41,

we get a difference of 32.

Question 2.

Answer: 78

Explanation:

Multiply the numbers 3 and 6

product is 3 x 26 = 78

Question 3.

List the factors of 20.

______________

Answer:

Factors of 20 are 1, 2, 4, 5, 10 and 20

Explanation:

Factors are numbers that divide exactly into another number.

20 is exactly divided with these numbers 1, 2, 4, 5, 10 and 20.

Question 4.

Round 27,368 to the nearest thousand.

______________

Answer:

27,000

Explanation:

Rounding to the nearest thousand means,

rounding the decimal to its nearest thousandth.

the digit next to the thousandth is less than 5,

then round down to the nearest thousand.

Question 5.

Write 0.65 as a percentage.

Answer:

65%

Explanation:

0.65 as a percentage

multiply the given decimal number with 100

0.65 x 100 = 65

Question 6.

5 × 7 + 12 = ___

Answer: 47

Explanation:

5 × 7 + 12 is a combined operation

first multiply 5 × 7 = 35

then add 35 + 12 = 47

Question 7.

Answer: 3

Explanation:

Let the unknown number be x

7x = 21

x = 21 ÷ 7

x = 3

Question 8.

How many minutes are in a quarter of an hour?

_____________________

Answer:

15 minutes

Explanation:

1 hour = 60 minutes

quarter of an hour = 60 ÷ 4 = 15min

Question 9.

Are the angles inside a regular octagon acute, right, or obtuse?

_____________________

Answer:

Obtuse angle

Explanation:

Two adjacent sides of an octagon makes an obtuse angle.

Obtuse angle is greater than right angle.

Question 10.

Which sports clubs have an equal number of members?

_____________________

Answer:

Tennis and Golf clubs

Question 11.

The numbers 1 through 10 are written on individual cards and placed in a bag. If you reach into the bag and pull out a card, what is the probability that it will not be a 9?

______________

Answer:

9 out of 10 or 90%

Explanation:

The numbers 1 through 10 are written on individual cards and placed in a bag.

probability of it not being 9 is,

10 – 9 = 1

Probability = 1 ÷ 10 = 0.9 or 90%

Question 12.

How many triangles of any size are there in the image?

Answer:

13 triangles

Explanation:

Triangle is a polygon with 3 edges and 3 vertices.

So, the number of triangles are 13.