# 180 Days of Math for Fifth Grade Day 40 Answers Key

By accessing our 180 Days of Math for Fifth Grade Answers Key Day 40 regularly, students can get better problem-solving skills.

## 180 Days of Math for Fifth Grade Answers Key Day 40

Directions Solve each problem.

Question 1.
86 – 65 = ___
Explanation:
By subtracting smaller number 65 from bigger number 86,
we get the difference as 21

Question 2.
10 × 40 = ______
Explanation:
When we multiply the numbers 10 and 40,
we get the product = 400

Question 3.
How many groups of 5 are in 80?
_______________ Question 4.
Is 978 greater than, less than, or equal to 987?
_______________
978 is less than 987
Explanation:
When we compare the place values,
tens place in 978 is less than 987.
So, 978 is less than 987

Question 5.
write $$\frac{65}{100}$$ as a decimal.
______________
0.65
Explanation:
$$\frac{65}{100}$$ as a decimal.
= 0.65

Question 6.
(60 ÷ 10) + 12 = ______
Explanation:
The given equation is in combined operation,
by applying BODMAS rule
(60 ÷ 10) + 12
= 6 + 12
= 18

Question 7.
7 × 5 = 40 – Explanation:
7 × 5 = 40 – Let eh unknown number be x
7 x 5 = 40 – x
35 = 40x
x = 40 – 35
x = 5

Question 8.
Is the area of a postage stamp measured in cm2 or m2?
_______________
Postage stamp is measured in cm2
Explanation:
The area of a postage stamp measured in cm2
As, its area is small.

Question 9.
Does a triangle have any parallel lines?
_____________________
No, it does not have parallel lines.
Explanation:
Triangles have no parallel lines,
as it have only 3 sides and impossible to any side to be parallel.

Question 10.
If Ali reads 6 more books, how many books will she have read?
_____________________ 16 books
Explanation:
From the above given graph of books read this year,
So, total books read 10 + 6 = 16

Question 11.
If you roll a 6-sided die, what is the probability of getting a 5?
_____________________
0.16 probability of getting 5
Explanation:
total number of event can occur is 6 and
if we role the die and getting 5 is one event
then the probability of getting a 5
$$\frac{1}{6}$$ = 0.16

Question 12.
A birthday cake is cut into 24 pieces. There are 6 pieces left after the party. What percentage of the cake was eaten?
_______________________
percentage of the cake was eaten = $$\frac{18}{24}$$ x 100
= $$\frac{3×100}{4}$$