# 180 Days of Math for Fourth Grade Day 82 Answers Key

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## 180 Days of Math for Fourth Grade Answers Key Day 82

Directions Solve each problem.

Question 1.
41 – 8 = ____
41 – 8 = 33
Explanation:

Explanation:
Step by Step:
Working each column from right to left
8 is greater than 1 so you must regroup:
Take 1 from 4, so 4 becomes 3.
Add 10 to 1, so 1 becomes 11.
11 minus 8 is 3

Question 2.
$$\frac{1}{2}$$ of 40 is ___.
$$\frac{1}{2}$$ of 40 is 20
Explanation:
To solve the problem, we multiply the Numerator by the whole number and leave the Denominator as is:
(1 x 40) / 2 = 40/2 = 20

Therefore, the answer to 1/2 of 40 in its lowest form is 20
Question 3.

= 6 R 2
44 divided by 7 equals
6 with a remainder of 2
Explanation:

Question 4.
49 Ã· 7 = ___
49 Ã· 7 = 7
= 7 R 0
= 7
49 divided by 7 equals
7 with a remainder of 0
Explanation:

Question 5.
How many digits are in the number 2,040?
2,040 (two thousand forty) is an has four-digits
Explanation:

Question 6.
9 Ã· = 3
9 Ã· 3 = 3
Explanation:
Multiplication and division are inversely proportional.
9 Ã· c = 3
c = 9 Ã· 3
c = 3

Question 7.
Calculate the perimeter of the rectangle.
______________

Explanation:
In rectangle, opposite sides are parallel and equal in length. So

So perimeter is 3 + 1 + 3 + 1 = 8

Question 8.
___ quarts = 6 pints
3 quarts 6 pints
Explanation:
1 quart = 2 pints
6 pints = 6 Ã· 2 = 3 quarts
3 quarts = 6 pints

Question 9.

 1st Trimester 2nd Trimester 3rd Trimester Troy Soccer Basket ball Base ball Jessica Golf Basket ball Track Allison Soccer driving swimming

Which children play the same sport the 1st trimester?
Troy and Allison play the same sport the 1st trimester as Soccer

Question 10.
I drink 500 mL of milk each day. How much do I drink in 6 days?
____________