Summing Whole Numbers from 1 to 100

The video tutorial explains how to quickly sum whole numbers from 1 to 100 by pairing them. It demonstrates that pairing numbers like 1 and 100, 2 and 99, and so on, each results in a sum of 101. With 50 such pairs, the total sum is calculated as 50 times 101, equaling 5050.

What is the initial problem presented in the video?

• Finding the sum of even numbers from 1 to 100

• Calculating the product of numbers from 1 to 100

• Summing the whole numbers from 1 to 100

• Identifying prime numbers between 1 and 100

Tags

CCSS.4.NBT.B.4

What is the hint given to solve the problem of summing numbers from 1 to 100?

• Multiply each number by 2

• Pair the numbers to find a common sum

• Subtract each number from 100

• Divide the numbers into groups of 10

Which of the following pairs sums to 101?

• 1 and 99

• 2 and 100

• 3 and 98

• 4 and 97

Tags

CCSS.2.OA.A.1

How many pairs are formed when summing numbers from 1 to 100?

• 100 pairs

• 75 pairs

• 50 pairs

• 25 pairs

What is the total sum of whole numbers from 1 to 100?

• 5150

• 5100

• 5050

• 5000