# 180 Days of Math for Third Grade Day 81 Answers Key

By accessing our 180 Days of Math for Third Grade Answers Key Day 81 regularly, students can get better problem-solving skills.

## 180 Days of Math for Third Grade Answers Key Day 81

Directions Solve each problem.

Question 1.
212 – 83 =

Explanation:
Working each column from right to left
3 is greater than 2 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 2, so 2 becomes 12.

Question 2.
10 Ã— 7 =
70
Explanation:
10 times 7 is 70
The product of 10 and 7 is 70.

Question 3.
3 times 7 is _______
21
Explanation:
3 times 7 is 21
7 + 7 + 7 = 21

Question 4.
45 Ã· 5 =

Explanation:
45 Ã· 5 = 9
quotient is 9 and the remainder is 0

Question 5.
What fraction of the opossums is not shaded?
____________

one-seventh
Explanation:
There are 7 opossums out of them 1 is not shaded
so, one-seventh of the fraction is not shaded.

Question 6.
30 6 = 24
Explanation:

Question 7.
I ate lunch at 12:00 P.M. and a snack at 3:00 P.M. How long did I wait after lunch before having a snack?
_______________
3 hours
Explanation:
The formula for calculating elapsed time isÂ elapsed time = end time â€“ start time. Subtract the minutes and hours separately
I ate lunch at 12:00 P.M. and a snack at 3:00 P.M.
12:00 P.M. to 3:00 P.M. is 3 hours

Question 8.
Which measurement is more likely to be the height of a door: 7 feet or 3 feet?
____________________
7 feet
Explanation:
In general a person height is measured as 6 feet
the door should be more higher than the person.
so, the door height is 7 feet.

Question 9.
How many vertices does a cylinder have?
____________________
noÂ vertices
Explanation:
a cylinder have 2 edges and no vertices

Question 10.
List all the two-digit numbers that can be made using each of the digits 4, 5, and 6 once.
____________________
____________________
45, 46, 44, 55, 66, 56, 65, 64, 54
Explanation:
3 x 3 = 9
we can make 9 combinations of 2 digit numbers with 3 numbers.

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