By accessing our 180 Days of Math for Fourth Grade Answers Key Day 80 regularly, students can get better problem-solving skills.

Directions Solve each problem.

Question 1.
24 – 6 = ____

Explanation:
Working each column from right to left
6 is greater than 4 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 4, so 4 becomes 14.

Question 2.

Explanation:
The product of 9 and 7 is 63
9 x 7 = 63

Question 3.

Explanation:
= 5 R 0
= 5
10 divided by 2 equals
5 with a remainder of 0

Question 4.
87 Ã· 10 = ____

Explanation:
We have the equation:
87 Ã· 10 = 8
Calculated to 0 decimal places.
Quotient is 8 and the remainder is 7

Question 5.
Write the largest 4-digit numeral using 1, 0, 7, and 9.
_____________________
9710
Explanation:
Write the given number from greatest to least
that will be the greatest number

Question 6.
Ã— 8 = 32
4 x 8 = 32
Explanation:
32 Ã· 4 = 8
Multiplication and division are inversely proportional equations.

Question 7.
Is the area of the cover of a book measured in cm2 or m2?
_____________________
cm2
Explanation:
The area of the cover of a book is measured in cm2
Because the length and width of the book size will me small
1 meter = 100 cm

Question 8.
Would you use a thermometer or a ruler to measure temperature?
_____________________
thermometer
Explanation:
Air temperature is measuredÂ with thermometers.
Common thermometers consist of a glass rod with a very thin tube in it.
The tube contains a liquid that is supplied from a reservoir, or “bulb,” at the base of the thermometer.

Question 9.
Complete around the axis of symmetry.

Explanation:
Axis of symmetry isÂ a line that divides an object into two equal halves,
thereby creating a mirror-like reflection of either side of the object.

Question 10.
If the shaded area is equal to one, what is the area of the crossed region?