180 Days of Math for Fourth Grade Day 83 Answers Key

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180 Days of Math for Fourth Grade Answers Key Day 83

Directions Solve each problem.

Question 1.

Answer:
37 + 33 = 70

Explanation:
Ones Place Value
3 + 7 = 10
Put the 0 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 3 + 3 = 7
Put the 7 in Tens place

Question 2.
Is \(\frac{1}{4}\) less than or greater than \(\frac{1}{8}\)?
_____________________
Answer:
\(\frac{1}{4}\) is greater than \(\frac{1}{8}\)
Explanation:
make denominator equal for \(\frac{1}{4}\) and  \(\frac{1}{8}\)
\(\frac{1}{8}\) = \(\frac{1}{8}\)
\(\frac{1}{4}\) = \(\frac{1}{4}\) X \(\frac{2}{2}\) =  \(\frac{2}{8}\)
If the denominators are the same, then the fraction with the greater numerator is the greater fraction.
Now compare \(\frac{2}{8}\) and  \(\frac{1}{8}\). Then
\(\frac{2}{8}\) > \(\frac{1}{8}\) Since\(\frac{2}{8}\) has greater numerator.
So \(\frac{1}{4}\) is greater.

Question 3.

Answer: 8
= 8 R 1
57 divided by 7 equals
8 with a remainder of 1
Explanation:

Question 4.
Divide 30 by 7. ______________
Answer:
= 4 R 2
30 divided by 7 equals
4 with a remainder of 2
Explanation:

Question 5.
Is 2,497 closer to 2,400 or 2,500?
______________
Answer:
2,497 closer to  2,500
Explanation:
2500 – 2497 = 3
2497 – 2400 = 97
So 2,497 closer to  2,500

Question 6.
7 + 7 + 7 + = 28
Answer:
7 + 7+ 7+ 7= 28
Explanation:
7 + 7+ 7+ c= 28
14 + 7 +c = 28
21 + c =28
c = 28 – 21
c = 7

Question 7.
Fill in the blanks for the time shown.

Answer:

Explanation:
short hand indicates hours and long hand indicates minutes.
Short hand on 4 and minute hand on 12. So it is 4 : 12 or 12 past 4

Question 8.
4 yards = ___ feet
Answer:
4 yards = 12 feet
Explanation:
1 yard = 3 feet
4 yard = ?
4 X 3 =12 feet

Question 9.
Is this a right angle? Use the corner of a page to test.
_____________________

Answer:
Yes it is right angle.
Explanation:
In geometry and trigonometry, a right angle is an angle of exactly 90 degrees or π/2 radians corresponding to a quarter turn. If a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles.

Question 10.
Ice cream treats at a carnival are $2.50 each or 3 for $6.00. Which is the better value?
______________
Answer:
3 for $6.00 is better value

Explanation:
if we buy 1 ice cream = $2.50.
and if we buy 3 then it is $6. So each ice cream value is 6 ÷ 3 =2

So each ice cream is $2, if we buy3 ice-creams.
So 3 for $6.00 is better value