Examples with solutions for Averages for 5th Grade: Identify the greater value

Exercise #1

Calculate the average of each group and choose the appropriate sign (?):

?171512129

Step-by-Step Solution

To solve this problem, we need to compare the given values: 1717, 1515, 1212, 1212, and 99, and choose the sign between the middle values 1515 and 1212.

Step-by-step analysis:

  • Step 1: Consider the numbers
    We're given the sequence 1717, 1515, ??, 1212, 1212, and 99. We're tasked to find the correct symbol to place in the sequence comparing 1515 with 1212.
  • Step 2: Compare the values
    1515 and 1212 are part of the sequence list. Clearly, 1515 is greater than 1212.
  • Step 3: Selection of the sign
    Since the number 1515 is greater than 1212, the inequality that represents this correctly is “>>” (greater than).

Therefore, the correct inequality to place in the sequence is >>.

Answer

>

Exercise #2

Calculate the average of each group and choose the appropriate sign (?):

4,4,4,4=?1,4,5,7 4,4,4,4\stackrel{?}{=}1,4,5,7

Video Solution

Step-by-Step Solution

To solve this problem, we'll calculate the average of each group and compare them.

  • Step 1: Calculate the average of the first group 4,4,4,44, 4, 4, 4:
    Sum of Group A=4+4+4+4=16\text{Sum of Group A} = 4 + 4 + 4 + 4 = 16
    Number of elements in Group A=4\text{Number of elements in Group A} = 4
    Average of Group A=164=4\text{Average of Group A} = \frac{16}{4} = 4
  • Step 2: Calculate the average of the second group 1,4,5,71, 4, 5, 7:
    Sum of Group B=1+4+5+7=17\text{Sum of Group B} = 1 + 4 + 5 + 7 = 17
    Number of elements in Group B=4\text{Number of elements in Group B} = 4
    Average of Group B=174=4.25\text{Average of Group B} = \frac{17}{4} = 4.25
  • Step 3: Compare the two averages:
    Average of Group A=4\text{Average of Group A} = 4
    Average of Group B=4.25\text{Average of Group B} = 4.25
    Since 4<4.254 < 4.25, the correct inequality is 4<4.254 < 4.25.

Therefore, the appropriate sign to use is <<.

Answer

<

Exercise #3

Calculate the average of each group and choose the appropriate sign (?):

9,3=?9,7,2 9,3\stackrel{?}{=}9,7,2

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Calculate the average of the first group of numbers: 9,39, 3.
  • Step 2: Calculate the average of the second group of numbers: 9,7,29, 7, 2.
  • Step 3: Compare the two averages and choose the appropriate comparison sign.

Now, let's work through each step:

Step 1: Calculate the average of the first group.

Sum of first group: 9+3=129 + 3 = 12

Number of elements: 22

Average: 122=6 \frac{12}{2} = 6

Step 2: Calculate the average of the second group.

Sum of second group: 9+7+2=189 + 7 + 2 = 18

Number of elements: 33

Average: 183=6 \frac{18}{3} = 6

Step 3: Compare the two averages.

The average of the first group is 66, and the average of the second group is also 66.

Since both averages are equal, the appropriate comparison sign is ==.

Therefore, the solution to the problem is = = .

Answer

=

Exercise #4

Calculate the average of each group and choose the appropriate sign (?):

5,5,5=?20,0,0,0 5,5,5\stackrel{?}{=}20,0,0,0

Video Solution

Step-by-Step Solution

To solve this problem, we will follow these steps:

  • Step 1: Calculate the average of the first group (5, 5, 5).
  • Step 2: Calculate the average of the second group (20, 0, 0, 0).
  • Step 3: Compare the two averages to choose the appropriate sign.

Now, let's work through each step:

Step 1: Calculate the average of Group 1.
The sum of Group 1 is 5+5+5=155 + 5 + 5 = 15.
The number of terms in Group 1 is 3.
Thus, the average of Group 1 is 153=5\frac{15}{3} = 5.

Step 2: Calculate the average of Group 2.
The sum of Group 2 is 20+0+0+0=2020 + 0 + 0 + 0 = 20.
The number of terms in Group 2 is 4.
Thus, the average of Group 2 is 204=5\frac{20}{4} = 5.

Step 3: Compare the averages.
The average of Group 1 is 5, and the average of Group 2 is also 5.
Since the averages are equal, the appropriate mathematical sign is '='.

Therefore, the correct comparison is 5,5,5==20,0,0,05, 5, 5 \stackrel{=}{=} 20, 0, 0, 0.

The appropriate sign is =.

Answer

=

Exercise #5

Calculate the average of each group and choose the appropriate sign (?):

10=?8,11,10,7 10\stackrel{?}{=}8,11,10,7

Video Solution

Step-by-Step Solution

Let's solve the problem step by step:

  • Step 1: Calculate the sum of the numbers. The numbers given are 8,11,10, 8, 11, 10, and 7 7 .

Sum = 8+11+10+7=36 8 + 11 + 10 + 7 = 36 .

  • Step 2: Find the average using the formula SumNumber of elements\frac{\text{Sum}}{\text{Number of elements}}.

The number of elements is 44.

Average = 364=9\frac{36}{4} = 9.

  • Step 3: Compare the average with 1010.

Since 99 is less than 1010, we have 9<109 < 10.

Therefore, the correct sign to fill in the blank is >\gt because we are comparing 1010 (the number on the left) with 99 (the average) and since 1010 is greater, 10>8,11,10,7 10\gt8,11,10,7 .

Answer

>

Exercise #6

Calculate the average of each group and choose the appropriate sign (?):

7,8,4,3,6,5=?3,7,8,5 7,8,4,3,6,5\stackrel{?}{=}3,7,8,5

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Calculate the average of the first group (7,8,4,3,6,5) (7, 8, 4, 3, 6, 5) .
  • Step 2: Calculate the average of the second group (3,7,8,5) (3, 7, 8, 5) .
  • Step 3: Compare the two averages.

Let's complete each step in detail:

Step 1: Calculate the average of the first group.

The numbers in the first group are 7,8,4,3,6,5 7, 8, 4, 3, 6, 5 . First, find the sum:

7+8+4+3+6+5=33 7 + 8 + 4 + 3 + 6 + 5 = 33 .

There are 6 numbers in this group, so the average is:

Average=336=5.5 \text{Average} = \frac{33}{6} = 5.5 .

Step 2: Calculate the average of the second group.

The numbers in the second group are 3,7,8,5 3, 7, 8, 5 . First, find the sum:

3+7+8+5=23 3 + 7 + 8 + 5 = 23 .

There are 4 numbers in this group, so the average is:

Average=234=5.75 \text{Average} = \frac{23}{4} = 5.75 .

Step 3: Compare the two averages.

The average of the first group is 5.5 5.5 and the average of the second group is 5.75 5.75 .

Therefore, 5.5 5.5 is less than 5.75 5.75 .

We choose the sign < < indicating that the average of the first group is less than the average of the second group.

The correct answer is < < .

Answer

<

Exercise #7

Calculate the average of each group and choose the appropriate sign (?):

12,16=?10,20,25,5,10 12,16\stackrel{?}{=}10,20,25,5,10

Video Solution

Step-by-Step Solution

To solve this problem, we'll determine the average of both groups and compare the results:

  • Step 1: Calculate the average of the first group (12,16)(12, 16).
    The sum of the first group is 12+16=28 12 + 16 = 28.
    There are 2 numbers, so the average is 282=14 \frac{28}{2} = 14.
  • Step 2: Calculate the average of the second group (10,20,25,5,10)(10, 20, 25, 5, 10).
    The sum of the second group is 10+20+25+5+10=70 10 + 20 + 25 + 5 + 10 = 70.
    There are 5 numbers, so the average is 705=14 \frac{70}{5} = 14.
  • Step 3: Compare the averages.
    Both groups have an average of 14; thus, the correct sign is = = .

Since both averages are equal, the conclusion is that the groups have the same average.
Therefore, the solution to the problem is =.

Answer

=

Exercise #8

Calculate the average of each group and choose the appropriate sign (?):

30,30,30=?30,30,30,30,30 30,30,30\stackrel{?}{=}30,30,30,30,30

Video Solution

Step-by-Step Solution

To solve this problem, follow these steps:

  • Step 1: Calculate the average for the first group of numbers: 30, 30, 30.
  • Step 2: Calculate the average for the second group of numbers: 30, 30, 30, 30, 30, 30.
  • Step 3: Compare the two averages using the appropriate sign.

Now, let's calculate each step:

Step 1: The first group is 30, 30, 30.
The sum is 30+30+30=9030 + 30 + 30 = 90.
The count is 3.
The average is 903=30\frac{90}{3} = 30.

Step 2: The second group is 30, 30, 30, 30, 30, 30.
The sum is 30+30+30+30+30+30=18030 + 30 + 30 + 30 + 30 + 30 = 180.
The count is 6.
The average is 1806=30\frac{180}{6} = 30.

Step 3: Compare the averages:
First average = 30 and Second average = 30. Thus, they are equal.

Therefore, the appropriate mathematical sign between the two groups is =\boxed{=}.

Answer

=

Exercise #9

Calculate the average of each group and mark the appropriate sign:

9,0=?9,0,0 9,0\stackrel{?}{=}9,0,0

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Calculate the average of each group.
  • Step 2: Compare the averages using the appropriate sign.

Now, let's work through each step:

Step 1: The first group is (9,0)(9,0). To find the average:

Average of (9,0)=9+02=92=4.5 \text{Average of (9,0)} = \frac{9 + 0}{2} = \frac{9}{2} = 4.5

Step 2: The second group is (9,0,0)(9,0,0). To find the average:

Average of (9,0,0)=9+0+03=93=3 \text{Average of (9,0,0)} = \frac{9 + 0 + 0}{3} = \frac{9}{3} = 3

Now, we compare the two averages:

4.5 4.5 compared to 3 3 .

Since 4.5 4.5 is greater than 3 3 , we mark the appropriate sign as >\gt.

Therefore, the solution to the problem is 9,0>9,0,0 9,0 \gt 9,0,0 .

Answer

>

Exercise #10

Calculate the average of each group and choose the appropriate sign (?):

4,5,10,5,1,5=?4,5,10,5,1 4,5,10,5,1,5\stackrel{?}{=}4,5,10,5,1

Video Solution

Step-by-Step Solution

To solve this problem, let's calculate the average for each group of numbers:

  • Step 1: Calculate the average of the first group 4,5,10,5,1,54, 5, 10, 5, 1, 5:
    • Sum of numbers: 4+5+10+5+1+5=304 + 5 + 10 + 5 + 1 + 5 = 30
    • Number of elements: 66
    • Average: 306=5\frac{30}{6} = 5
  • Step 2: Calculate the average of the second group 4,5,10,5,14, 5, 10, 5, 1:
    • Sum of numbers: 4+5+10+5+1=254 + 5 + 10 + 5 + 1 = 25
    • Number of elements: 55
    • Average: 255=5\frac{25}{5} = 5

Both groups have an average of 55, so the correct sign to place between them is =.

Answer

=

Exercise #11

Calculate the average of each group and choose the appropriate sign (?):

812?345

Video Solution

Answer

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Exercise #12

Calculate the average of each group and choose the appropriate sign (?):

?

Video Solution

Answer

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Exercise #13

Calculate the average of each group and choose the appropriate sign (?):

?

Video Solution

Answer

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Exercise #14

Calculate the average of each group and choose the appropriate sign (?):

?

Video Solution

Answer

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Exercise #15

Calculate the average of each group and choose the appropriate sign (?):

?

Video Solution

Answer

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Exercise #16

Calculate the average of each group and choose the appropriate sign (?):

?

Video Solution

Answer

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