# 180 Days of Math for Fifth Grade Day 72 Answers Key

By accessing our 180 Days of Math for Fifth Grade Answers Key Day 72 regularly, students can get better problem-solving skills.

## 180 Days of Math for Fifth Grade Answers Key Day 72

Directions Solve each problem.

Question 1.
Subtract 37 from 91.
______________
Explanation:
By subtracting 37 from 91,
we get difference 54

Question 2.

Explanation:
Multiplying the numbers 27 and 3,
we get the product 81

Question 3.
Is 8 a factor of 64?
______________
Yes, 8 is a factor of 64
Explanation:
When we divided 64 with 8,
we get the remainder zero.
division is inverse operation of multiplication.
64 ÷ 8 = 8 x 8 => 64

Question 4.
Round 13,649 to the nearest thousand.
______________
14,000
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.

Explanation:
Let the unknown number be x

x = $$\frac{6×5}{10}$$
x = $$\frac{30}{10}$$ = 3

Question 6.
3 × 6 – 2 × 7 = ____
Explanation:
3 × 6 – 2 × 7 is a combined operation.
18 – 14 = 4

Question 7.
36 + = 73
Explanation:
Let the unknown number be x
36x = 73
x = 73 – 36
x = 37

Question 8.
4L = ____ mL
4,000ml
Explanation:
1 liter = 1000ml
4 L = 4 x 1000
= 4,000ml

Question 9.
Which line is parallel to E?

Line C
Explanation:
parallel lines are two lines in the same plane at equal distance from each other and never meet.
So, line C is parallel to line E

Question 10.
What is the term for the difference between the lowest value and the highest value in a data set?
_____________________
Range
Explanation:
The Range is the difference between the lowest and highest values.
Example: In {4, 6, 9, 3, 7} the lowest value is 3, and the highest is 9.

Question 11.
Is it impossible, likely, certain, or unlikely that you will always land on heads when flipping a quarter?
______________
Unlikely
Explanation:
When we flip a coin it is unlikely to land heads always.
Only 50% of possibility is there.

Question 12.
Complete the web by multiplying the center number by each number around it.