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AIRLINE ACCIDENTS

publish date: 2025/06/11 04:40:00 UTC

The numbers of accidents involving U.S. airlines for the year 2000 through 2007 are listed in the table below.  

Find the total number of accidents for those years.

Year Accidents
2000 56
2001 46
2002 41
2003 54
2004 30
2005 40
2006 33
2007 26

 

Answer = (1)

Correct Answer

(1) 326

Explanation

The word total indicates that all the numbers must be summed up together.  You can use the table as if it is a column format and do the summation.

To solve this in a systematic and Year 2–3 friendly way, we’ll guide the child to add the numbers step-by-step using small groups. Here’s how:

Step 1: Add two numbers at a time

Let’s pair the numbers:

  1. 56 + 46
    → 50 + 40 = 90
    → 6 + 6 = 12
    → 90 + 12 = 102

  2. 41 + 54
    → 40 + 50 = 90
    → 1 + 4 = 5
    → 90 + 5 = 95

  3. 30 + 40
    → Easy: 70

  4. 33 + 26
    → 30 + 20 = 50
    → 3 + 6 = 9
    → 50 + 9 = 59

Step 2: Add those results together

Now we add:

  • 102 + 95 =
    → 100 + 90 = 190
    → 2 + 5 = 7
    → 190 + 7 = 197

  • 70 + 59 =
    → 70 + 50 = 120
    → 120 + 9 = 129

Now final addition:

  • 197 + 129
    → 190 + 120 = 310
    → 7 + 9 = 16
    → 310 + 16 = 326

Final Answer:

The total number of accidents from 2000 to 2007 is 326.

Reference

Mathematics for college students, go-math-science.com

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