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 = 
Answer:
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 × 7 =
Answer:
70
Explanation:
10 times 7 is 70
The product of 10 and 7 is 70.
Question 3.
3 times 7 is _______
Answer:
21
Explanation:
3 times 7 is 21
7 + 7 + 7 = 21
Question 4.
45 ÷ 5 =
Answer:
Explanation:
45 ÷ 5 = 9
quotient is 9 and the remainder is 0
Question 5.
What fraction of the opossums is not shaded?
____________
Answer:
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
Answer:
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?
_______________
Answer:
3 hours
Explanation:
The formula for calculating elapsed time is elapsed time = end time – 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?
____________________
Answer:
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?
____________________
Answer:
no 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.
____________________
____________________
Answer:
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.