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

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

Question 7.
7 Ã— 5 = 40 –
Explanation:
7 Ã— 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
= $$\frac{3×100}{4}$$