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Either just go ahead and add them up, or use the formula for an arithmetic series.
Sum = 1/2 x number_of_numbers x (first_number + last_number)
= 1/2 x 40 x (1 + 40)
= 20 x 41
= 820.
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∙ 10y ago
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What is sum of first 40 numbers?
The sum of the first 40 whole numbers is 780.
How many pairs of whole numbers equal the sum of 40?
20 of them
What are 3 consecutive numbers when the first and thirds sum is 40?
19,20,21
What is the sum of the first 80 consecutive odd numbers?
40 * * * * * The correct answer is 6400.
Find the sum of first 20 even numbers. sum?
The sum of the first 20 even numbers... is 110
What is sum of first 40 numbers?
The sum of the first 40 whole numbers is 780.
What is the sum of the first 40 odd numbers?
The sum of the first 40 odd numbers is 1,600.
What is the sum of the first 40 evn numbers?
The sum of the first 40 even numbers is 1,640.
How many pairs of whole numbers equal the sum of 40?
20 of them
How many pairs of whole numbers have a sum of 40?
An infinite number.
What are 3 consecutive numbers when the first and thirds sum is 40?
19,20,21
What is the sum of the first 80 consecutive odd numbers?
40 * * * * * The correct answer is 6400.
Find the sum of first 20 even numbers. sum?
The sum of the first 20 even numbers... is 110
How can I solve the 40 odd numbers?
1 ,3, 5, 7 ,9......, 77, 79. Sum of first 40 odd numbers is 1600. This is the answer
What is the answer when you add all numbers from 40 to 60?
The sum of the numbers 1 to 39 = 39 x 40 ÷ 2 = 780 The sum of the numbers 1 to 60 = 60 x 61 ÷ 2 = 1830 Therefore the sum of the numbers 40 to 60 = 1830 - 780 = 1050
What is the sum of the first 20 even numbers?
2+4+6+8+10........+40=420
What is the average of 7 2 9 22?
Sum of numbers = 40 Count of numbers = 4 Average = Sum/Count = 40/4 = 10
