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finlep [7]
3 years ago
7

which is a good comparison of the estimated sum and the actual sum of 7 10/12+2 11/12? Greater or lesser

Mathematics
1 answer:
Crazy boy [7]3 years ago
8 0
I would estimate 7 10/12 to 8 and i would estimate 2 11/12 to  3 so 8 plus 3 would equal 11 so that would be the estimate. the actual would be 10 8/11 so the estimate would be bigger.
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Why 2+2=4 and not 2+2=22 ?
Lunna [17]

2 + 2 = 4 because 4 is a sum of 1-digit numbers

2 + 2 ≠ 22 because 22 is the sum of 1-digit and 2-digit numbers

Step-by-step explanation:

Lets explain some important notes:

  • The 1-digit number consists of one digit, 4 is a one-digit number
  • The 2-digit number consists of two digits, ones digit and tens digit, 23 is a 2-digit number, the ones digit is 3 and the tens digit is 2, so its value is 20 + 3
  • The 3-digit number consists of ones digit, tens digit and the hundreds digit, 123 is a 3-digit number, the ones digit is 3, the tens digit is 2 and the hundreds digit is 1, so its value is 100 + 20 + 3

∵ 2 + 2 is the addition problem of two 1-digit numbers

∴ There sum will be 4 which is also 1-digit number

∴ 2 + 2 must be 4

∵ 22 is a two digit number

∴ Its value is 20 + 2 ⇒ not 2 + 2

∴ 2 + 2 can not be 22

2 + 2 = 4 because 4 is a sum of 1-digit numbers

2 + 2 ≠ 22 because 22 is the sum of 1-digit and 2-digit numbers

Learn more:

You can learn more about the place value of numbers in brainly.com/question/13174282

#LearnwithBrainly

8 0
3 years ago
The surface area of the prism is ______ square units. All measurements in the image below are in units. (Input whole number only
White raven [17]
To find the area of a triangle, use 1/2 x b x h.  3 x 4 = 12    1/2 of 12 = 6

There are two triangles, each of these are 6      6 x 2 = 12

The bottom shape is 3.5 x 3      3.5 x 3 = 10.5

The front shape is 3.5 x 5      3.5 x 5 = 17.5

The back shape is 3.5 x 4        3.5 x 4 = 14

Add them all together: 14 + 17.5 + 10.5 + 12 = 54

Your answer is 54!
7 0
3 years ago
What is the answer to 36/(9-4)??
kodGreya [7K]

Answer:

36/(9-4)=7.2

Step-by-step explanation:

You first have to subtract 4 from 9, because it is in the parentheses. The answer is 5, so you have 36/5, which equals 7.2

6 0
3 years ago
Read 2 more answers
Can someone please help me with this quiz or does anyone have the answer key it’s by Gina Wilson.
tatiyna

Answer:

put a more clear pic

Step-by-step explanation:

6 0
3 years ago
If a scale drawing has a scale of 1 centimetre to 4 meters which measurements are correct
andrew-mc [135]

Answer: Statements 2 and 3

Step-by-step explanation:

On a drawing scale;

1cm - 4m

4CM - 16M (MULTIPLYING BY 4)

6cm - 24m (multiplying by 6)

7cm - 28m (multiplying by 7)

8cm - 32m (multiplying by 8)

9CM - 36M (MULTIPLYING BY 9)

3 0
3 years ago
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